# Apphemeride Precise Astronomy vs Telescope Log

The clearest difference is in-app purchases: Telescope Log at none against Apphemeride Precise Astronomy's 2. Telescope Log also leads on iOS requirement (18.0 vs 26.0). On price, review sentiment, update cadence and ads there is nothing between them.

Both are free to download. Apphemeride Precise Astronomy sells 2 one-off in-app purchases. Telescope Log asks for nothing beyond the download.

Apphemeride Precise Astronomy ships an update every 4 weeks, Telescope Log every 3 weeks. The most recent releases landed on September 30, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Apphemeride Precise Astronomy | Telescope Log |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.5 (2 ratings)](https://appshunter.io/ios/app/telescope-log-darksite/id6792251293/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 442 MB | 70 MB |
| Requires iOS | 26.0 | **18.0** |
| Devices | iPhone, iPad | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Csaba Lengyel](https://appshunter.io/developer/1888397396) | [Jawahar Natarajan](https://appshunter.io/developer/6772381065) |

## What reviewers say

### Apphemeride Precise Astronomy

[App page](https://appshunter.io/ios/app/apphemeride-precise-astronomy/id6776641899)

This app provides precise astronomical data for sky analysis, including eclipses, Moon motion, and planetary positions. It offers location-based calculations and visual tools to understand celestial events and their visibility.

**Highlights:** Precise sky analysis, Eclipse and Moon motion tracking, Location-based celestial calculations, Horizon Tracker for celestial body movement, Detailed planetary and solar system data, Solar and lunar eclipse simulations, Configurable data display

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 3-day Trial | Free | one-time |
| Apphemeride Full Unlock | $49.99 | one-time |


### Telescope Log

[App page](https://appshunter.io/ios/app/telescope-log-darksite/id6792251293)

This app helps telescope owners plan their night of stargazing by suggesting targets based on their equipment and sky conditions. It also provides a detailed logbook for recording observations and tracks progress towards astronomy certificates.

**Highlights:** Gear-aware target suggestions, Session queue and planning, Detailed observing logbook, Red field mode for night vision, Tracking for astronomy certificates, Offline functionality, Data export and import

**Features:** Family Sharing

**In-app purchases:** none


## Frequently asked questions

### Is Apphemeride Precise Astronomy free?

Apphemeride Precise Astronomy is free to download, with in-app purchases available.

### Is Telescope Log free?

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

### Do Apphemeride Precise Astronomy or Telescope Log have ads?

Neither Apphemeride Precise Astronomy nor Telescope Log shows ads.

### Which is updated more often, Apphemeride Precise Astronomy or Telescope Log?

Apphemeride Precise Astronomy ships an update every 4 weeks, and Telescope Log every 3 weeks. Most recently, Apphemeride Precise Astronomy was updated on September 30, 2026 and Telescope Log on October 15, 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.*