engine vs Sou9
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
engine
This app tracks the disassembly of aircraft engines, detailing each event, associated documents, and parts involved. It provides a comprehensive overview of the engine teardown process.
- Monitor aircraft engine teardown
- View all teardown events
- Access associated documents
- Track engine parts
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"EngineTeardown" is an app to monitor the teardown of an aircraft engine. It shows all events of the teardown process with the associated documents and parts.
Sou9
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Grocery shopping app
Screenshots
Verdict
The clearest difference is update cadence: Sou9 at every 2 weeks against engine's every 13 months. On price, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
engine ships an update every 13 months, Sou9 every 2 weeks. The most recent releases landed on September 24, 2026 and September 19, 2026 respectively.
| Parameter | engine | Sou9 |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 13 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 13.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 6 MB | 99 MB |
| Age rating | 4+ | 4+ |
| Developer | Lufthansa Technik AG - Innovation | Basel Aridi |
In-app purchases
engine
No in-app purchases
Sou9
No in-app purchases
