# GRID AI Mobile vs Surface Time

The clearest difference is in-app purchases: GRID AI Mobile at none against Surface Time's 1. GRID AI Mobile also leads on device support (3 vs 1) and iOS requirement (15.0 vs 17.6). Surface Time's advantage is update cadence (weekly vs every 6 weeks). On price and ads there is nothing between them.

Both are free to download. Surface Time sells 1 one-off in-app purchase. GRID AI Mobile asks for nothing beyond the download.

GRID AI Mobile ships an update every 6 weeks, Surface Time weekly. The most recent releases landed on October 1, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | GRID AI Mobile | Surface Time |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/surface-time/id6747015704/reviews)** |
| Number of ratings | — | **3** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Weekly** |
| Monetization | — | Free |
| Size | 67 MB | 17 MB |
| Requires iOS | **15.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Ningbo Boden New Energy Co., Ltd.](https://appshunter.io/developer/1853794147) | [Neel Makhecha](https://appshunter.io/developer/1353167736) |

## What reviewers say

### GRID AI Mobile

[App page](https://appshunter.io/ios/app/grid-ai-mobile/id6745211176)

**In-app purchases:** none


### Surface Time

[App page](https://appshunter.io/ios/app/surface-time/id6747015704)

This app encourages you to put your phone down with an intuitive, button-free timer. It uses subtle haptics and visual cues to guide you, and offers unique notification options like LED flash or calming sounds. Track your progress towards daily goals and customize them for different tasks.

**Highlights:** Button-free timer operation, Intuitive haptic feedback, Visual timer progression, LED flash notifications, Calming sound alerts, Customizable daily goals, Progress tracking

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Surface - One Time Purchase | $5.99 | one-time |


## Frequently asked questions

### Is GRID AI Mobile free?

GRID AI Mobile is free to download, with no in-app purchases.

### Is Surface Time free?

Surface Time is free to download, with in-app purchases available.

### Do GRID AI Mobile or Surface Time have ads?

Neither GRID AI Mobile nor Surface Time shows ads.

### Which is updated more often, GRID AI Mobile or Surface Time?

GRID AI Mobile ships an update every 6 weeks, and Surface Time weekly. Most recently, GRID AI Mobile was updated on October 1, 2026 and Surface Time on October 5, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*