# Sandflow vs Next Level Systems Battery

The clearest difference is in-app purchases: Next Level Systems Battery at none against Sandflow's 5. Next Level Systems Battery also leads on iOS requirement (15.6 vs 17.0). Sandflow's advantage is update cadence (every 9 days vs every 3 months). On price, ads and device support there is nothing between them.

Both are free to download. Sandflow sells 5 in-app purchases, starting at $3.99 per month. Next Level Systems Battery asks for nothing beyond the download.

Sandflow ships an update every 9 days, Next Level Systems Battery every 3 months. The most recent releases landed on September 9, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | Sandflow | Next Level Systems Battery |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.5 (10 ratings)](https://appshunter.io/ios/app/sandflow-screen-time-control/id6452629146/reviews)** | — |
| Number of ratings | **10** | — |
| Positive reviews | 70.6% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 9 days** | Every 3 months |
| Monetization | Free with in-app purchases | — |
| Size | 95 MB | 24 MB |
| Requires iOS | 17.0 | **15.6** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [MoneyCoach UG](https://appshunter.io/developer/1170891449) | [Next Level Systems GmbH](https://appshunter.io/developer/1804878050) |

## What reviewers say

### Sandflow

[App page](https://appshunter.io/ios/app/sandflow-screen-time-control/id6452629146)

This app helps you monitor and limit your daily phone and app usage. It tracks time spent on specific applications and games, offering insights to foster healthier digital habits and improve productivity. Features include leaderboards and real-time usage widgets.

**Highlights:** App usage tracking, Screen time limits, Dynamic Island stopwatch integration, Leaderboards for app usage, Home Screen widgets, Usage insights and analytics

**Features:** Family Sharing, Vision Pro support

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Plus Monthly | $3.99 | per month |
| Premium Monthly Family | $8.99 | per month |
| Screen Time Realtime Plus | $13.99 | per year |
| Premium Yearly Family | $28.99 | per year |
| Lifetime Plus | $49.99 | one-time |


### Next Level Systems Battery

[App page](https://appshunter.io/ios/app/next-level-systems-battery/id6759964491)

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

**In-app purchases:** none


## Frequently asked questions

### Is Sandflow free?

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

### Is Next Level Systems Battery free?

Next Level Systems Battery is free to download, with no in-app purchases.

### Do Sandflow or Next Level Systems Battery have ads?

Neither Sandflow nor Next Level Systems Battery shows ads.

### Which is updated more often, Sandflow or Next Level Systems Battery?

Sandflow ships an update every 9 days, and Next Level Systems Battery every 3 months. Most recently, Sandflow was updated on September 9, 2026 and Next Level Systems Battery on September 19, 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.*