# Napper vs VoltTimer

The clearest difference is update cadence: Napper at every 4 days against VoltTimer's every 3 weeks. Napper also leads on iOS requirement (16.4 vs 18.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Napper sells 22 in-app purchases, starting at $8.99 per month and VoltTimer sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Napper ships an update every 4 days, VoltTimer every 3 weeks. The most recent releases landed on October 30, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Napper | VoltTimer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (4.6K ratings)](https://appshunter.io/ios/app/napper-baby-sleep-tracker/id1491340863/reviews)** | — |
| Number of ratings | **4.6K** | — |
| Positive reviews | 74.4% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 3 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 115 MB | 6 MB |
| Requires iOS | **16.4** | 18.6 |
| Devices | iPhone, Apple Watch | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Napper AB](https://appshunter.io/developer/1491340862) | [CherneyWerk LLC](https://appshunter.io/developer/1887149773) |

## What reviewers say

### Napper

[App page](https://appshunter.io/ios/app/napper-baby-sleep-tracker/id1491340863)

This app uses data and science to predict your baby's naps and bedtime, helping families sleep better. It offers personalized schedules, tracking for feedings and diapers, soothing sleep sounds, and educational articles on infant sleep.

**Highlights:** Personalized baby sleep schedule, User-friendly baby tracker, Variety of sleep sounds, Science-based sleep articles, Trends and statistics charts, Caregiver sharing

**Features:** Apple Watch app, Vision Pro support, iPhone Duo support

**In-app purchases (22)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited: Baby-Sleep Expert + | $8.99 | per month |
| Unlimited: Baby-Sleep Expert + | $10.99 | per month |
| Napper Sleep Monthly | $14.99 | per month |
| Unlimited: Baby-Sleep Expert + | $14.99 | per month |
| Napper Complete Monthly | $19.99 | per month |
| Unlimited: Baby-Sleep Expert + | $19.99 | per year |
| Unlimited: Dreamy Bedtime + | $19.99 | per 3 months |
| Unlimited: Baby-Sleep Expert + | $29.99 | per 3 months |
| Unlimited: Baby-Sleep Expert + | $34.95 | per year |
| Unlimited: Baby-Sleep Expert + | $34.99 | per year |
| Unlimited: Night Slumber + | $39.99 | per year |
| Unlimited: Night Slumber + | $49.99 | per year |
| Unlimited: Baby-Sleep Expert + | $49.99 | per 3 months |
| Unlimited: Baby-Sleep Expert + | $69.99 | per year |
| Unlimited: Baby-Sleep Expert + | $69.99 | per year |
| Napper Sleep Yearly | $89.99 | per year |
| Napper Sleep Yearly | $89.99 | per year |
| Unlimited: Night Slumber + | $119.99 | per year |
| Napper Complete Yearly | $129.99 | per year |
| Napper Complete Yearly | $129.99 | per year |
| Unlimited: Night Slumber + | $9.99 | one-time |
| Unlimited: Night Slumber + | $39.99 | one-time |

**What reviewers like**

- 🚀 Accurate nap and sleep predictions
- 👍 Easy to use and intuitive interface
- 💡 Helpful for establishing routines
- 👍 Allows multiple caregivers to track
- 🚀 Spot-on with sleep cycle timings

**What reviewers complain about**

- 🐛 Glitchy after recent updates
- 🐛 Difficulty editing past events
- 🐛 Inconsistent widget functionality
- 🐛 Confusing UI changes
- 🐛 Inability to track longer sleep periods

**Reported bugs**

- App crashing and freezing issues
- Data loss and sync problems
- Incorrect sleep/wake time predictions

**Requested features**

- Apple Watch integration
- Ability to track pumping and growth data
- More customization options for schedules
- Offline functionality


### VoltTimer

[App page](https://appshunter.io/ios/app/volttimer-workout-timer/id6760988281)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| VoltTimer Pro | $3.99 | one-time |


## Frequently asked questions

### Is Napper free?

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

### Is VoltTimer free?

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

### Do Napper or VoltTimer have ads?

Neither Napper nor VoltTimer shows ads.

### Which is updated more often, Napper or VoltTimer?

Napper ships an update every 4 days, and VoltTimer every 3 weeks. Most recently, Napper was updated on October 30, 2026 and VoltTimer on October 28, 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.*