Comparison

Hydra vs Previously On AI

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Hydra

This app offers a fast, fluid, and seamless browsing experience for subreddits, designed with a native iOS aesthetic. It provides powerful features for both casual and dedicated users, enhancing media viewing and interaction with content.

Highlights
  • Lightning-fast loading
  • Multireddit support
  • Favorite subreddits
  • Native iOS design
  • Image and video viewer
  • Multiple account support
  • Quick access gestures
Features
Currently charting
Read full description

Hydra is the best client for browsing your subreddits and the ultimate experience on iOS. It's fast, fluid, and designed to make browsing more seamless than ever before. If you're looking for a powerful yet beautifully simple client, Hydra is the way to go. "Hydra makes Reddit feel like a natural part of iOS. Everything just flows." - u/goosewatergoose "This app is what you get when the developer really understands what a great user experience should be. It’s everything the Reddit app isn't" - DAC, UK "Long time Apollo user. Found the app a month ago. Great work so far, just wanted to convey the props" - @gruthsc3 (Discord) Hydra is crafted with a native iOS design, making it feel right at home on your device. It loads fast, responds instantly, and makes browsing an incredibly intuitive experience. Packed with powerful features, it's built to be the ultimate companion for both casual browsing and hardcore Redditors alike. Features that make Hydra shine: - Lightning-fast loading for seamless scrolling and browsing - Multireddit support for organizing and following your favorite topics - Favorite subreddits to keep your go-to communities at your fingertips - A beautifully designed, native iOS experience that feels right at home - Gorgeous image and video viewer for an immersive media experience - Multiple account support so you can switch effortlessly - Quick access gestures to upvote, downvote, reply, and more with a swipe - Markdown support to get the most out of your posts and comments - System share menu integration to easily share content anywhere - Full inbox access for messages and notifications - Private messages support to stay connected with other users - Powerful search to find posts, subreddits, and users in an instant - Customizable themes to match your style - Compact mode for an optimized browsing experience - Highly customizable UI to tailor Hydra to your needs - Blur content and spoilers for a safe browsing experience - Low data mode to keep your usage efficient - Beautiful, intuitive UI/UX that makes using Hydra a delight Hydra is always evolving with new features and improvements based on feedback from the community. If there's something you'd love to see, drop by the /r/HydraApp subreddit and let me know! Hydra is an unofficial client, but it just might be the best one you've ever used. --- This is an unofficial client for the Reddit service (Reddit is a registered trademark of Reddit, Inc., and this app is not affiliated with or endorsed by Reddit). --- Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Previously On AI

Stay informed about rapid AI advancements with a daily briefing that synthesizes key developments, their significance, and future implications. Explore detailed insights into AI labs, platforms, and research, and save important takeaways for future reference.

Highlights
  • Daily AI development briefing
  • AI lab tracking
  • Trend and source analysis
  • Save key insights
  • Source-linked coverage
  • Digest notifications
Features
Read full description

AI moves fast. Previously On AI helps you keep up without the overwhelm. Get a focused daily briefing that turns scattered headlines into a clear story: what happened, why it matters, and what to watch next. Explore the app your way: • Recap: A fast narrative of the day’s most important AI developments • Labs: Track signals across leading AI labs, platforms, research, and media • Digest: Dive into trends, sources, and story-level detail • Saved: Build your own library of key takeaways Built for people who want clarity, context, and speed: • Source-linked coverage • Lab-by-lab visibility • Save and revisit key insights • Optional digest notifications

Screenshots

Hydra4 screens
Previously On AI4 screens

Verdict

The call

The clearest difference is in-app purchases: Previously On AI at none against Hydra's 5. Previously On AI also leads on rating (5.0 vs 4.8). Hydra's advantage is ratings volume (814 vs 1) and chart position (#195 vs unranked). On price, update cadence, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Hydra sells 5 in-app purchases, starting at $2.99 per month. Previously On AI asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Previously On AI holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Hydra has 814 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Hydra ships an update every 3 weeks, Previously On AI every 5 weeks. The most recent releases landed on November 4, 2026 and October 31, 2026 respectively.

Scorecard5 real differences · 6 level
Hydra versus Previously On AI: the parameters behind the verdict, then further details
ParameterHydraPreviously On AI
PriceFreeFree
Rating4.8 (814 ratings)5.0 (1 ratings) — better
Positive reviews75.2% of reviews—
Number of ratings814 — better1
Update frequencyEvery 3 weeks — betterEvery 5 weeks
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
Best chart rank#195 — better—
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.4 — better17.0
Further details — not scored
Size79 MB1 MB
Age rating17+4+
DeveloperDimitrie MilinovichVia Labs

Customer experience

Hydra

All ratings814 ratings
Positive95.1%
Neutral1.7%
Negative3.2%
Written reviews153 reviews
Positive75.2%
Neutral5.9%
Negative19.0%

Previously On AI

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Hydra

Reported bugs

1 issue
  • Expect some bumps

Requested features

2 requests
  • Customizing the gestures and hiding the username on the tab bar
  • Content blocking, comment images, startup feed, and others

Previously On AI

Not enough reviews yet to summarise bugs or requests.

In-app purchases

5 purchases

Hydra

Subscriptions1
  • Hydra Pro$2.991 Month
One-time4
  • Nice Tip$1.99
  • Generous Tip$4.99
  • Amazing Tip$9.99
Show 1 more
  • Incredible Tip$19.99
None

Previously On AI

No in-app purchases

Questions

Is Hydra free?
Hydra is free to download, with in-app purchases available.
Is Previously On AI free?
Previously On AI is free to download, with no in-app purchases.
Which has better reviews, Hydra or Previously On AI?
Previously On AI is rated higher. Hydra averages 4.8 out of 5 from 814 ratings, while Previously On AI averages 5.0 from 1 ratings.
Do Hydra or Previously On AI have ads?
Neither Hydra nor Previously On AI shows ads.
Which is updated more often, Hydra or Previously On AI?
Hydra ships an update every 3 weeks, and Previously On AI every 5 weeks. Most recently, Hydra was updated on November 4, 2026 and Previously On AI on October 31, 2026.

Other comparisons