E vs ConvertAll Drag
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
E
Read full descriptionHide full description
E-Roommate, the billing can be for the entire dormitory's electricity consumption or only for air conditioning usage. After installing the dormitory user app and completing the dormitory room or equipment pairing, users can check the electricity consumption status of the dormitory or air conditioning through the app. It can be paired with an automatic top-up machine to support automatic top-up function.
ConvertAll Drag
Read full descriptionHide full description
Unit converter with 20 categories and 182 units. Search categories and units, save favorite pairs, and reopen recent conversions. Copy or share results. Includes calculator, BMI, tip, and date tools. Supports 28 languages and theme settings.
Screenshots
Verdict
The clearest difference is iOS requirement: ConvertAll Drag at 13.0 against E's 15. On price, update cadence, ads and in-app purchases 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.
E ships an update every 6 weeks, ConvertAll Drag every 2 months. The most recent releases landed on October 13, 2026 and October 12, 2026 respectively.
| Parameter | E | ConvertAll Drag |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 6 weeks — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15 | 13.0 — better |
| Further details — not scored | ||
| Size | 18 MB | 23 MB |
| Age rating | 4+ | 4+ |
| Developer | 台科電科技股份有限公司 | Shin YuJin |
In-app purchases
E
No in-app purchases
ConvertAll Drag
No in-app purchases
