# Rebbe Responsa vs DeepSpace

The clearest difference is price: Rebbe Responsa at Free against DeepSpace's $0.99. Rebbe Responsa also leads on ratings volume (69 vs 1) and iOS requirement (15.0 vs 26.0). DeepSpace's advantage is update cadence (every 5 days vs every 8 months). On rating, ads, in-app purchases and device support there is nothing between them.

Rebbe Responsa is free to download; DeepSpace costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 4.9 for Rebbe Responsa against 5.0 for DeepSpace. That said, the two scores are not equally well evidenced: Rebbe Responsa has 69 ratings behind it against 1, so its average is the more settled of the two.

Rebbe Responsa ships an update every 8 months, DeepSpace every 5 days. The most recent releases landed on October 24, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Rebbe Responsa | DeepSpace |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | [4.9 (69 ratings)](https://appshunter.io/ios/app/rebbe-responsa/id1618199479/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/deepspace-starviewer/id6790279077/reviews)** |
| Number of ratings | **69** | 1 |
| Positive reviews | 94.4% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 5 days** |
| Monetization | **Free** | Paid |
| Size | 40 MB | 4 MB |
| Requires iOS | **15.0** | 26.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 12+ | 4+ |
| Developer | [REBBE RESPONSA INC.](https://appshunter.io/developer/1618199481) | [Alexandr Garlock Development House LLC](https://appshunter.io/developer/353093375) |

## What reviewers say

### Rebbe Responsa

[App page](https://appshunter.io/ios/app/rebbe-responsa/id1618199479)

Access a vast collection of the Lubavitcher Rebbe's English letters, offering unique insights and guidance on a wide range of life topics. This app provides a comprehensive, searchable database of these profound letters, making timeless wisdom accessible and practical for everyone.

**Highlights:** Comprehensive database of Rebbe's English letters, Searchable by topic, Insights on marriage, health, education, and more, Practical advice based on Torah, Easy and convenient access

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

**In-app purchases:** none


### DeepSpace

[App page](https://appshunter.io/ios/app/deepspace-starviewer/id6790279077)

Explore the night sky with a real-time star map. Identify stars, planets, constellations, and deep-sky objects by simply pointing your device. Features include a sky search, time machine, and observation journal.

**Highlights:** Gyroscope sky map, 16 constellations with mythology, 110 Messier objects, Tap to lock on celestial objects, Sky search and jump, Tonight's Sky view, Time Machine for planning, Observation journal

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Rebbe Responsa free?

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

### Is DeepSpace free?

DeepSpace costs $0.99, with no in-app purchases.

### Which has better reviews, Rebbe Responsa or DeepSpace?

DeepSpace is rated higher. Rebbe Responsa averages 4.9 out of 5 from 69 ratings, while DeepSpace averages 5.0 from 1 ratings.

### Do Rebbe Responsa or DeepSpace have ads?

Neither Rebbe Responsa nor DeepSpace shows ads.

### Which is updated more often, Rebbe Responsa or DeepSpace?

Rebbe Responsa ships an update every 8 months, and DeepSpace every 5 days. Most recently, Rebbe Responsa was updated on October 24, 2026 and DeepSpace on October 11, 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.*