Ai2 OLMoE vs Thatdidhappen
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Ai2 OLMoE
Explore and improve on-device AI models with this open-source tool. It allows developers to prototype AI experiences locally without cloud connectivity, ensuring complete user privacy. Researchers can test and integrate models directly on their devices.
- On-device AI model exploration
- Prototype AI experiences locally
- Open-source codebase
- No cloud connectivity required
- Fully private interactions
- Shareable conversation output
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Our app is intended to help researchers better explore how to make on-device intelligence better and to enable developers to quickly prototype new AI experiences – all with no cloud connectivity required. The Ai2 OLMoE app can be used to: * Experience which real-world tasks state-of-the-art local models are capable of * Research how to improve small AI models * Test your own models locally using our open-source codebase * Integrate OLMoE into other iOS applications Best of all, interactions with OLMoE are fully private. Unless you decide to share a conversation, your conversations never leave your device. Features: * Efficiency: OLMoE is a highly efficient mixture-of-experts version of the Ai2 OLMo family of models * Performance: OLMoE is trained with the fully open, state-of-the-art Tülu 3 recipe * Privacy: The Ai2 OLMoE app provides privacy and security by operating completely on-device * Shareable: Easily share the output of your conversations with friends or colleagues * Truly open: The OLMoE model and the application code are fully open-source OLMoE is proudly offered by Ai2 as a powerful research tool to help the community better understand how LLMs are created and how they operate. When interacting with OMLoE, always use your best judgment, fact-check important information, and consider the context when interpreting content generated in this app. Open source code repository available at: https://github.com/allenai/OLMoE.swift Terms of service: https://allenai.org/terms/2024-09-25 Privacy policy: https://allenai.org/privacy-policy/2022-07-21
Thatdidhappen
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Thatdidhappen is your personal evidence documentation app. Document important events directly on your device - no cloud, no servers, just local storage. THREE SPECIALIZED MODULES: SCREENSHOT DOCUMENTATION Import screenshots of messages, social media posts or websites. The app automatically calculates the SHA-256 hash for integrity verification. MEMORY PROTOCOL Record conversations, incidents or meetings. Document date, location, participants and witnesses in a structured format. PHOTO DOCUMENTATION Photograph accidents, defects or handovers with GPS location. Perfect for apartment handovers, parking damages or property damage. WHY THATDIDHAPPEN? - All data stays on your device - No account required - SHA-256 hash calculation for every screenshot - PDF export for all documents - Automatic document hashes - English and German - Dark mode support Ideal for: Landlords, tenants, drivers, parents, employees - anyone who needs to secure evidence.
Screenshots
Verdict
The clearest difference is price: Ai2 OLMoE at Free against Thatdidhappen's $2.99. Thatdidhappen's advantage is update cadence (every 3 days vs every 2 months) and iOS requirement (13.0 vs 17.5). On ads, in-app purchases 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
Ai2 OLMoE is free to download; Thatdidhappen costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Ai2 OLMoE ships an update every 2 months, Thatdidhappen every 3 days. The most recent releases landed on October 23, 2026 and October 10, 2026 respectively.
| Parameter | Ai2 OLMoE | Thatdidhappen |
|---|---|---|
| Price | Free — better | $2.99 |
| Rating | 4.8 (17 ratings) — better | — |
| Positive reviews | 77.8% of reviews | — |
| Number of ratings | 17 — better | — |
| Update frequency | Every 2 months | Every 3 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, Mac — better | iPhone, iPod |
| Requires iOS | 17.5 | 13.0 — better |
| Further details — not scored | ||
| Size | 7 MB | 2 MB |
| Age rating | 17+ | 4+ |
| Developer | THE ALLEN INSTITUTE FOR ARTIFICIAL INTELLIGENCE | ADHOCON GmbH |
In-app purchases
Ai2 OLMoE
No in-app purchases
Thatdidhappen
No in-app purchases









