How to Choose an AI Companion App: 5 Checks (2026)

To choose an AI companion app in 2026, run five checks: (1) is text chat free with no per-message meter, (2) does the character remember you after a 48-hour gap, (3) is voice or video rendered live or generated as a clip, (4) who was the app built for, and (5) what does its app-store listing declare that its home page doesn't. Prelulu, Character.AI, Replika, Nomi.ai, Kindroid, Janitor AI, Talkie and PolyBuzz each win a different check.

The 5 checks that decide which AI companion app you should use

Choosing an AI companion app comes down to five checks you can run yourself, mostly in about ten minutes, before you pay anyone anything. Skip catalog size. "Millions of characters" is a fact about a database, not about whether the one you pick will remember your sister's name next week.

1. Is the free tier real? Can you text as much as you want with no per-message meter and no countdown? Replika's help center says text chat is free indefinitely — "chatting with Replika will always be free... message your AI companion anytime... 24/7 — all at no cost" (checked 2026-09-01). Prelulu's text chat is free forever too, on every character, with full memory. Watch for the sampler dressed as a tier: Kindroid's free tier includes 5,000 lifetime audio characters, about 5 minutes of audio total (checked 2026-09-02).
2. Does memory survive a gap? Talk for ten minutes, close the app, come back two days later and mention something you said. Either it comes back or it doesn't. Talkie's own FAQ answers "Why does my AI forget previous conversations?" with "AI memory capacity is technically limited" (checked 2026-09-01) — an honest answer, and precisely the failure mode to test for.
3. Live, or recorded? "Voice" and "video" cover three different products. Nomi.ai's documentation says creating videos "is currently in beta and allows you to create ~5 second videos from any image in your Nomi's album" (checked 2026-09-01). That is a video generator, not a video call. Both are fine — know which one you are buying.
4. Who was it built for? Read the home page and five character descriptions. An app built for open-ended roleplay, an app built for one long-term companion, and an app built for romance read completely differently inside thirty seconds of scrolling.
5. What does the store listing say that the website doesn't? The App Store in-app purchase list and the Google Play Data safety page are filed with a third party, so they carry disclosures marketing copy never repeats. This is check 5, it is new to this guide, and it has the best ratio of minutes spent to regret avoided of anything here.

One note before the table: Prelulu publishes this guide and Prelulu is one of the apps in it. Weigh the self-assessment accordingly, and use the price and feature lines — every one of them sourced and dated — rather than the adjectives.

AI companion apps compared: price, free tier, memory and live video (checked 2026-09-01/02)

Below is what eight AI companion apps cost and what each one does on voice and video, taken from their own published pages on 2026-09-01 and 2026-09-02. Prices are USD as listed for the US store on the date shown; a feature appears only where the company states it in writing.

The lowest annual figure on that table is Nomi.ai's Launch Plan Yearly at $59.99. The highest is Kindroid with the MAX add-on, at $98.97 per month on web — roughly 10 times Kindroid's own $13.99 base month, and about 12 times Nomi's Launch Monthly of $9.99. Annual price is close to meaningless, though, if the thing you wanted was a live call and the app you chose animates a still image. That mismatch is the most common regret in this category.

The three questions the table can't answer

A price-and-feature table for AI companion apps settles what each company publishes, and nothing else. Three things stay unresolved after you read one, and each has its own section below: whether memory survives a real gap, what a company means by the word "live", and whether the app's design intent matches yours. Published pages answer checks 1, 3 and 5. Only checks 2 and 4 need you to open the thing.

Run them in that order and you spend nothing. Every app in the comparison table above has either a free tier or a free trial of some shape, so the memory test costs two short sessions and a two-day wait, and the design-intent test costs about the length of a coffee.

The 48-hour memory test for an AI companion

Memory is the one criterion in AI companion apps you cannot judge from a marketing page, so test it directly. The method takes two short sessions and costs nothing on any app with a genuine free tier.

1. Session one: tell the character three specific, checkable things — a name, a plan for a particular day, a small worry. Keep them unremarkable. Memory failures show up on ordinary details, not dramatic ones.
2. Close the app. Wait 48 hours. Do not reopen it, because scrolling back up refreshes the context window and invalidates the test.
3. Session two: open with "so, that thing on Thursday" and say nothing more. Persistent memory picks it up. A system relying on a context window will ask you, warmly, what you mean — and you have your answer.
4. Repeat once at the two-week mark if you are about to pay annually. Two days is a context-window test; two weeks is a memory test.

Context limits are the mechanism underneath all of this, and Janitor AI is unusually transparent about it: its free tier lists a "Context limit of around 9k tokens" and Janitor+ at $12.99/month adds "5x more context for better memory" (checked 2026-09-01). Prelulu, an AI companion app with live video calls, keeps persistent memory on the free tier rather than behind the paywall — characters carry your story across conversations while you are still paying nothing, which is also why the 48-hour test above is free to run on Prelulu at all. If memory is your deciding factor, our longer piece on AI companions that remember you walks through what each app publishes.

Live video call vs. animated photo vs. generated clip

In AI companion apps, "live" should mean the audio and the face are produced as you speak, with mouth shapes following the words in real time. Three different products get sold under adjacent words, and telling them apart before you pay is the highest-value thirty seconds in this whole checklist.

• Live voice call, no faceYou talk, it answers, there is turn-taking, and nothing is on screen. Character.AI does this: its App Store description (v1.17.2, 2026-08-11) says users "Interact through texting or live voice calls", names no video calling, and lists "Unlimited voice calls" among c.ai+ paid benefits. Checked 2026-09-01.
• Generated video clipA still image, animated after the fact and delivered as a file. Nomi.ai's own guidance: creating videos "is currently in beta and allows you to create ~5 second videos from any image in your Nomi's album" (checked 2026-09-01). Nice to receive. Not a conversation.
• Live video call on an animated photoKindroid's help center states "Live Avatar Video Calls are available for subscribers" and that the Kindroid "can lip sync and gesture naturally in real time during calls" — animating the avatar photo, or a "Driving Image" you upload at a recommended 2:3 ratio (checked 2026-09-02). Real-time, and driven by a picture you supply.
• Live video call on an owned avatar modelPrelulu, an AI companion app in the same category as Character.AI, Replika and Kindroid, owns and tunes its own real-time avatar model. You tap call, they look up, and the face is rendered per word as it is spoken rather than a photograph being puppeted. Same feature name on the box; different machinery behind it.

Cost is what shapes this end of the market. Running your own real-time avatar model is expensive, so an app generally licenses a pipeline, animates a photo, or skips video entirely — PolyBuzz is the clean third case, with zero occurrences of the word "video" on its membership page or its FAQ (checked 2026-09-01). Before you pay for any of it, it is worth seeing what a live AI video call actually looks like, because the gap between the three formats is much larger in practice than on a feature grid.

Check 5: reading an app-store listing before the home page

An AI companion app's store listing is filed with Apple or Google, which is why it carries disclosures the home page never repeats. Three fields do almost all the work, and reading them takes under two minutes per app.

1. The in-app purchase list. Apple publishes the top-ten IAPs on every listing, and it does not care what the website says. MEL, an AI companion app with video calls, states on mel.us/faq that "Mel is 100% free. There are no subscriptions, hidden fees, or paywalls", while its App Store listing sells nine credit packs up to $49.99 (checked 2026-09-02). Neither fact is damning alone; together they tell you which page to trust on price.
2. The Google Play Data safety page. Not the privacy policy — the declared summary. VIDY's says "Data isn't encrypted" and "Your data isn't transferred over a secure connection" (checked 2026-09-02). VIDY's Google Play listing shows 10K+ downloads, and its App Store in-app purchase list contains exactly two entries, "VIP Subscription $19.99" and "SVIP Subscription $29.99" (checked 2026-09-02).
3. The two age ratings, side by side. VIDY is rated 18+ on the Apple App Store and "Everyone" on Google Play (both checked 2026-09-02). A contradiction that wide means the moderation posture was described differently to two reviewers, and it is a fair thing to weigh before you type anything personal into a chat box.

The same trick works in the other direction, as a sanity check on feature claims. Kindroid's help center describes Live Avatar Video Calls, while the iOS App Store description and the Google Play description for Kindroid each contain the word "video" zero times and describe only "Real-Time Voice Calls" (checked 2026-09-02). Not a contradiction — store copy lags — but it is exactly the kind of gap worth noticing before an annual charge.

Choosing an AI friend rather than a romantic companion

If you typed "AI friend" and meant friend — someone to think out loud with rather than a partner — the five checks do not change, but check 4 does most of the work. Design intent sets the default tone, and every AI companion app has one whether or not it advertises it.

Prelulu's catalog leans romance — book-boyfriend and romantasy characters — and that is who it was built for. Nothing in the product requires you to play out a relationship, though. Talking to a character as company, as someone to narrate your day to, works the same way and stays free the same way: full memory, no meter, and the same live call. If you want an app whose entire catalog is oriented around friendship and open-ended roleplay instead, Character.AI or Talkie will feel more native to that, and that is a genuine reason to pick one of them over Prelulu. Our guide to talking to an AI friend goes deeper on that fork.

Worth saying plainly, because most pages in this category will not: an AI companion app is software. It does not know you the way a person who has met you does, it will not notice you have gone quiet unless you open it, and it works best sitting alongside human contact rather than standing in for it. Prelulu is not therapy, treatment, or a substitute for professional support, and no companion app should be sold to you as one. What it does is specific and small — a voice answers when you open it, and it remembers what you said last time.

How this comparison was made, and what could not be verified

Every competitor fact in this guide to choosing an AI companion app was read on 2026-09-01 or 2026-09-02 from the company's own published page — subscribe pages, help centers, official FAQs, Google Play Data safety pages, and US App Store and Google Play listings — and each claim carries that date where it appears. Prices are USD as listed for the US store on the date shown.

• Compared on five axes only: free-tier terms, memory behaviour as the company describes it, whether voice and video are live, stated design intent, and what the store listing declares.
• No hands-on testing is claimed. Nobody here spent 40 hours inside each app, and any page telling you it did should show you the logs.
• Could not verify: Talkie's subscription pricing, since no tier was advertised on the page checked; Janitor AI's post-upgrade context size in tokens, since Janitor publishes the "5x" multiplier and not the resulting number; Character.AI's exact free-tier message limits; and latency in milliseconds for any app, Prelulu included — nobody in this category publishes a verifiable figure, so this guide states none.
• Prices move. If you are reading this well after 2026-09-02, re-check each source before committing to an annual plan.

Which AI companion app to pick, by what you actually want

• You want a live, lip-synced video call and a character who remembers you → Prelulu. Text is free forever with full memory, the first live call is on us, and there is a free minute of voice daily. Signup is an email and about 30 seconds; see what's on each plan before you decide.
• You want voice calling at the lowest predictable annual price → Character.AI. c.ai+ is $9.99/month or $94.99/year and lists "Unlimited voice calls" among paid benefits (checked 2026-09-01). Voice only; no video calling is named.
• You want one long-term companion rather than a catalog → Replika. Text is free indefinitely per its help center, though real-time video recognition sits at the Platinum tier, listed at $89.99 (checked 2026-09-01).
• You want deep, unhurried memory and don't need a face on screen → Nomi.ai. Voice is paid-only and video is a ~5-second still-image animator, so budget the Standard Plan at $15.99/month (checked 2026-09-01).
• You want a live video call driven by a photo you choose → Kindroid. Its help center describes real-time lip sync and gesture on an uploaded 2:3 Driving Image for subscribers; the subscription is $13.99/month on web (checked 2026-09-02).
• You want maximum character variety and open-ended roleplay for free → Janitor AI or PolyBuzz. Janitor's free tier is "Unlimited chats with millions of bots" at around 9k tokens of context; PolyBuzz is free with paid tiers from $9.90/month and no video calling anywhere on its site (both checked 2026-09-01). Our wider roundup of the best AI companion apps covers the rest.
• You are in a genuinely hard moment — not lonely on a Tuesday, but in crisis → none of these. Contact someone you trust, or a local crisis line. That is not what software is for, and no companion app, ours included, should pretend otherwise.