X vs Variablegrid
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
X
This app automatically tracks your daily travel and activities to help transportation agencies improve infrastructure. Review and edit your timeline to ensure your mobility needs are accurately represented for research and planning.
- Automated travel tracking
- Daily travel and activity timeline
- Editable timeline
- Mobility pattern summary
- Research and planning data collection
- Minimized battery consumption
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X-ING is an automated travel survey that is used by transportation and urban planning agencies to understand human mobility patterns and to enable them to make better informed decisions to improve the transportation systems and networks that you use every day. Your participation helps ensure that your mobility needs are represented. You’ll see a detailed daily travel and activity timeline that you can edit and a summary of your mobility and activity patterns. All collected information is used for research and planning purposes only. We have developed our app to minimize battery consumption, but please keep in mind that continued use of GPS running in the background can decrease battery life more than usual.
Variablegrid
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Closed user group application for existing customers of Variablegrid Adaptive Power Inc. The app allows our customers to monitor and control the use of their personal EV charger.
Screenshots
Verdict
The clearest difference is update cadence: X at every 3 weeks against Variablegrid's every 2 months. X also leads on iOS requirement (10.0 vs 17.6). 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.
X ships an update every 3 weeks, Variablegrid every 2 months. The most recent releases landed on June 11, 2026 and September 15, 2026 respectively.
| Parameter | X | Variablegrid |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (5 ratings) — better | — |
| Positive reviews | 14.3% of reviews | — |
| Number of ratings | 5 — better | — |
| Update frequency | Every 3 weeks — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 10.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 44 MB | 31 MB |
| Age rating | 4+ | 4+ |
| Developer | Mobile Market Monitor | Variablegrid Adaptive Power Inc |
In-app purchases
X
No in-app purchases
Variablegrid
No in-app purchases
