In the third-party chatgpt apk, the session saving function is based on the specific version of the technical realization. According to the 2023 test data of XDA Developers, 65% of unofficial APKs (e.g., v1.5.2) have the support of storing local sessions (storage path: /data/data/[package name]/cache), and the storage space occupied by a single conversation record on average is 128KB (max support for storing 100,000 characters). However, its cross-device synchronization success rate is only 23% (success rate of cloud synchronization of official apps is 98%). For example, the field measurement by user @TechReviewer shows that among the 100 sessions saved on Android 12 devices, 17 were corrupted due to permission problems (CRC check failure rate was 3.4%).
The stability is affected by the technical realization method. Some APKs (e.g., GitHub open-source project ChatGPT-Mobile v2.3) employ SQLite encrypted storage (AES-256), and the session recovery rate has increased to 94% (78% when not encrypted), but the encryption process has increased the CPU load by 12% (the temperature of Snapdragon 888 devices has increased to 46°C). For text file storage-based APKs (e.g., v1.4.0), during system updating (Android 12→13), the probability of session loss can be as large as 41% (Google Drive backup loss rate for official apps is 0.3%).
Safety risks should be very careful. Virustotal detection shows that 32% of chatgpt APKs have data leakage risks during session storage – for example, a version named “ChatGPT_Pro.apk” will upload the conversation history in plain text to a third-party server (with 4.2KB data transmitted per second). The privacy risk of the user is increased by 6.8 times. Security provider CheckPoint observed that the year-over-year occurrence of phishing attacks through APK session storage vulnerabilities increased by 220% in 2023.
Functional Limitations and Alternative Solutions:
Local export: Session export as PDF/TXT is implemented by certain APKs (e.g., v1.6.1) with a mean 1.2-second conversion time per thousand characters, but at merely 78% format retention fidelity (95% for official apps).
Third-party sync: APK session will be synced automatically to Google Drive by Tasker script (Android 11+ only) with a success rate of 63% but may trigger the API rate limit (at most 50 requests/hour).
Open source solution: GitHub project ChatGPT-Secure v3.0 employs IPFS distributed storage, and it encrypts session shards and stores them in a decentralized network (recovery success rate 89%), reducing the storage cost to $0.002 /GB.
User operation suggestions: Give priority to the choice of APKs with a code audit pass rate of ≥95% (such as the F-Droid repository version), and check file integrity from time to time using SHA-256 (which can reduce the risk of data tampering by 72%). For significant conversations, it is recommended to manually take screenshots and save them (PNG format takes up an average of 1.5MB per screen) or use the AutoSync application to achieve cross-platform backup (incremental synchronization error rate 0.8%).
In the future, through the enhancement of Scoped Storage in Android 14, the session storage security level of chatgpt apk will be escalated compulsively. It is foreseeable that the data leakage rate of the conforming version in 2024 can be reduced to less than 3%. However, the adaptation cost of the developer may enlarge the size of the APK installation package by 40% (from 12MB to 17MB).