# SmartEngineer vs Life Timer

The clearest difference is in-app purchases: SmartEngineer at none against Life Timer's 16. SmartEngineer also leads on ads (none vs shown) and device support (3 vs 1). On price and update cadence there is nothing between them.

Both are free to download. Life Timer sells 16 in-app purchases, starting at $0.99 per 7 days. SmartEngineer asks for nothing beyond the download.

SmartEngineer ships an update every 2 months, Life Timer monthly. The most recent releases landed on October 3, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | SmartEngineer | Life Timer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/life-timer-lifespan-tracker/id1617937548/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | — | Free with in-app purchases |
| Size | 14 MB | 109 MB |
| Requires iOS | **10.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Engineering Intelligent Technology Co., Limited](https://appshunter.io/developer/1493103669) | [ZipoApps](https://appshunter.io/developer/1671444635) |

## What reviewers say

### SmartEngineer

[App page](https://appshunter.io/ios/app/smartengineer/id1493103670)

**Features:** macOS Compatibility

**In-app purchases:** none


### Life Timer

[App page](https://appshunter.io/ios/app/life-timer-lifespan-tracker/id1617937548)

This app helps you visualize and manage your remaining lifespan. It provides daily and hourly reminders to encourage mindful living and goal setting, with a unique visual representation of your life's journey.

**Highlights:** Personalized lifespan countdown, Visual 'Life Tree' progress, Daily and hourly reminders, Encourages goal setting, Mindful living prompts

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

**In-app purchases (16)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited access | $0.99 | per 7 days |
| Unlimited access | $1.99 | per 7 days |
| Unlimited access | $2.99 | per 7 days |
| Unlimited access | $3.99 | per 7 days |
| Premium features | $4.99 | per 7 days |
| Premium features | $5.99 | per 7 days |
| Premium features | $6.99 | per 7 days |
| Premium features | $7.99 | per 7 days |
| Premium features | $8.99 | per 7 days |
| Unlimited access | $9.99 | per year |
| Unlimited access | $19.99 | per year |
| Premium features | $19.99 | per month |
| Unlimited access | $29.99 | per year |
| Premium features | $29.99 | per month |
| Unlimited access | $39.99 | per year |
| Unlimited access | $49.99 | per year |


## Frequently asked questions

### Is SmartEngineer free?

SmartEngineer is free to download, with no in-app purchases.

### Is Life Timer free?

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

### Do SmartEngineer or Life Timer have ads?

Life Timer shows ads; SmartEngineer does not.

### Which is updated more often, SmartEngineer or Life Timer?

SmartEngineer ships an update every 2 months, and Life Timer monthly. Most recently, SmartEngineer was updated on October 3, 2026 and Life Timer on September 20, 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.*