Comparison

Ai2 OLMoE vs Thatdidhappen

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • On-device AI model exploration
  • Prototype AI experiences locally
  • Open-source codebase
  • No cloud connectivity required
  • Fully private interactions
  • Shareable conversation output
Read full description

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

About

Thatdidhappen

Features
Read full description

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

Ai2 OLMoE4 screens
Thatdidhappen4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

UpkeepUpdate frequency

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.

Scorecard3 real differences · 7 level
Ai2 OLMoE versus Thatdidhappen: the parameters behind the verdict, then further details
ParameterAi2 OLMoEThatdidhappen
PriceFree — better$2.99
Rating4.8 (17 ratings) — better—
Positive reviews77.8% of reviews—
Number of ratings17 — better—
Update frequencyEvery 2 monthsEvery 3 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, Mac — betteriPhone, iPod
Requires iOS17.513.0 — better
Further details — not scored
Size7 MB2 MB
Age rating17+4+
DeveloperTHE ALLEN INSTITUTE FOR ARTIFICIAL INTELLIGENCEADHOCON GmbH

In-app purchases

None

Ai2 OLMoE

No in-app purchases

None

Thatdidhappen

No in-app purchases

Questions

Is Ai2 OLMoE free?
Ai2 OLMoE is free to download, with no in-app purchases.
Is Thatdidhappen free?
Thatdidhappen costs $2.99, with no in-app purchases.
Do Ai2 OLMoE or Thatdidhappen have ads?
Neither Ai2 OLMoE nor Thatdidhappen shows ads.
Which is updated more often, Ai2 OLMoE or Thatdidhappen?
Ai2 OLMoE ships an update every 2 months, and Thatdidhappen every 3 days. Most recently, Ai2 OLMoE was updated on October 23, 2026 and Thatdidhappen on October 10, 2026.

Other comparisons