Comparison

Binaural Purrs vs Sub Keeper Tracker

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

Head to head
About

Binaural Purrs

Experience unique audio companions designed to match your mood. Four distinct cat characters offer original soundscapes, utilizing binaural beats to gently support calm, focus, daydreaming, or deep rest. This app provides a quiet, character-driven audio experience without being a dedicated meditation or productivity tool.

Highlights
  • Four cat companions with original audio
  • Binaural beats for calm, focus, and rest
  • Personalized character matching
  • Designed for headphone use
  • Original artwork and sound design
Features
Read full description

Some moments need a different kind of company. Binaural Purrs is an audio app built around four cat companions — each one designed for a different state of mind. Mio is for the slow, lo-fi moments when the day's been loud and you need quiet without explanation. Piper is for the working hours, when you need a desk cat who'll keep you company while the work gets done. Juniper is for the daydreaming hours, the ones that don't quite belong to the calendar. Mona is for rest. The deep kind. The kind that doesn't ask anything of you. Each cat comes with original audio scored to a specific brainwave state — alpha, beta, theta, and delta — designed using binaural beat principles to gently support the mood you're already in. This isn't a meditation app. It's not a productivity app. It's not a sleep tracker. It's something quieter — a small, character-driven space where the audio meets you where you are, and a cat sits with you while you're there. Press play. The right cat is already waiting. Features: — Four cat companions, each with original audio — Binaural beats engineered for calm, focus, meditation, and rest — Personalized character matching based on your current state — Designed for use with headphones for full binaural effect — Original artwork and sound design throughout Designed and developed by a two-person team who genuinely love cats and the way certain sounds change a room. Terms of Use: https://binauralpurrs.com/terms

About

Sub Keeper Tracker

Features
Read full description

Sub Keeper helps you see what you pay for subscriptions — and when the next charge hits — without linking a bank account. • Home: this month’s total and upcoming charges • Calendar: billing dates at a glance • Stats: spending by category • Reminders before renewal (optional) • Catalog of popular services, plus custom subscriptions • English, Українська, and Русский • Data stays on your device. Export a JSON backup when you want. Free: up to 5 subscriptions (plus optional extra slots). Premium unlocks more via the App Store. We do not connect to your bank. We do not sync to the cloud in this version. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://subkeeper.app/privacy.html Our Terms of Use: https://subkeeper.app/terms.html

Screenshots

Binaural Purrs4 screens
Sub Keeper Tracker4 screens

Verdict

The call

The clearest difference is ads: Binaural Purrs at none against Sub Keeper Tracker's shown. On price, update cadence, in-app purchases 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. Binaural Purrs sells 1 in-app purchase, starting at $5.99 per month and Sub Keeper Tracker sells 3 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Binaural Purrs ships an update every 5 days, Sub Keeper Tracker every 9 days. The most recent releases landed on October 31, 2026 and November 6, 2026 respectively.

Scorecard1 real difference · 9 level
Binaural Purrs versus Sub Keeper Tracker: the parameters behind the verdict, then further details
ParameterBinaural PurrsSub Keeper Tracker
PriceFreeFree
Rating5.0 (3 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings3 — better—
Update frequencyEvery 5 days — betterEvery 9 days
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFreemium—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.1 — better15.5
Further details — not scored
Size103 MB78 MB
Age rating4+4+
DeveloperBinaural PurrsAndrii Zhuravskyi

In-app purchases

1 purchases

Binaural Purrs

Subscriptions1
  • Binaural Purrs7 Days trial$5.991 Month
3 purchases

Sub Keeper Tracker

Subscriptions1
  • Premium Monthly$3.991 Month
One-time2
  • Support Sub Keeper$0.99
  • Premium Lifetime$39.99

Questions

Is Binaural Purrs free?
Binaural Purrs is free to download, with in-app purchases available.
Is Sub Keeper Tracker free?
Sub Keeper Tracker is free to download, with in-app purchases available.
Do Binaural Purrs or Sub Keeper Tracker have ads?
Sub Keeper Tracker shows ads; Binaural Purrs does not.
Which is updated more often, Binaural Purrs or Sub Keeper Tracker?
Binaural Purrs ships an update every 5 days, and Sub Keeper Tracker every 9 days. Most recently, Binaural Purrs was updated on October 31, 2026 and Sub Keeper Tracker on November 6, 2026.

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