Spike AI vs Universal Voice
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Spike AI
This AI chat application offers flexible model execution, allowing you to use cloud-based AI, your own on-device models, or connect to a remote server. It supports encrypted conversation syncing across devices and project organization for managing your AI interactions.
- Cloud-based AI chat
- On-device model execution
- Connect to OpenAI-compatible servers
- Sync encrypted conversations
- Organize chats in projects
- Choose tools for tasks
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Meet Spike Studio: AI chat on your iPhone, with a choice of where your model runs. GET STARTED WITH SPIKE CLOUD Create a free account in the app, verify your email, and start chatting. You do not need a computer or your own server. Free usage limits apply. This version offers no in-app subscriptions or purchases. USE YOUR OWN MODELS Connect an OpenAI-compatible server, including LM Studio, or download an on-device model on a supported iPhone. These options do not require a Spike account. Model downloads need available storage, and on-device performance depends on your iPhone and the selected model. CONNECT YOUR COMPUTER Use an account-linked Runtime from Spike Studio on your computer, and follow Agent work from your iPhone. Computer and Runtime setup are required for these optional features. KEEP YOUR CONVERSATIONS TOGETHER Sign in with the same Spike account across devices to sync encrypted conversations. Organize chats in projects and choose tools for the task at hand. Tools that use iPhone features request the relevant permissions. Cloud chats are processed by Spike Cloud; on-device models run on your iPhone; a connected server processes the chats you send to it. Choose the option that fits your needs.
Universal Voice
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Universal Voice is your AI-powered translator, live interpreter, and transcriber in one app. Access note: Translation, conversation, transcription, and AI voice features require a separate in-app purchase, either a subscription or 1-Day Pass, after onboarding. POINT, TAP, TRANSLATE Aim your camera at a menu, sign, label, or document and tap Translate. The picture holds still and the translation appears right on top of the original text, so you can read it at your own pace. Prices are shown in your own currency too, with today's exchange rate. Tap Reset and you're ready for the next one. HAVE A REAL CONVERSATION Tap to listen and Universal Voice transcribes and translates what the other person says, then suggests natural replies it can speak aloud in their language. Or start the conversation yourself - speak your language and let the app talk for you. TYPE OR SNAP A PHOTO Type or paste any text, or pick a photo from your library, and get a translation you can copy, share, hear aloud, or save to favorites. When you're offline, supported languages translate right on your device. TRANSCRIBE ANYTHING Turn lectures, meetings, and interviews into clean text in the language you choose. Transcripts stay private on your device. WHY UNIVERSAL VOICE - Tap-to-translate camera with prices in your currency - Text and photo translation, with offline support - Live two-way conversation with smart reply suggestions - Natural AI voice in dozens of languages - Private, on-device transcription - Built for travel, work, family, and everyday life Never get lost in translation again. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: Spike AI at none against Universal Voice's 4. On price, update cadence, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Universal Voice sells 4 in-app purchases, starting at $4.99 per 7 days. Spike AI asks for nothing beyond the download.
Spike AI ships an update every 8 days, Universal Voice weekly. The most recent releases landed on October 30, 2026 and October 24, 2026 respectively.
| Parameter | Spike AI | Universal Voice |
|---|---|---|
| Price | Free | Free |
| Rating | 3.1 (11 ratings) — better | — |
| Positive reviews | 71.4% of reviews | — |
| Number of ratings | 11 — better | — |
| Update frequency | Every 8 days | Weekly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 121 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | Jan Stellmann | Christopher Nichols |
In-app purchases
Spike AI
No in-app purchases
Universal Voice
- Universal Voice Pro Weekly$4.997 Days
- Universal Voice Pro Monthly$9.991 Month
- Universal Voice Pro Yearly$39.991 Year
- Universal Voice Day Pass$2.99









