Comparison

Reverse Time vs Hjarni Notes

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

Head to head
About

Reverse Time

This app helps you plan your day efficiently by calculating task start times to meet deadlines. It's designed for individuals with ADHD or anyone seeking better time management, offering instant calculations and an intuitive interface for seamless activity flow.

Highlights
  • Instant time calculations
  • Customizable scheduling for events and daily routines
  • Intuitive interface for task prioritization
  • ADHD-friendly design
  • Streamlined planning process
Features
Read full description

Are you tired of struggling to manage your time effectively? Reverse Time is the ultimate tool for seamless time management, perfect for individuals with ADHD or those seeking a more efficient planning experience. Features: * Instant Time Calculations: With Reverse Time, bid farewell to manual calculations. Enter your tasks and durations, and instantly discover when to begin your first task to finish the last by your chosen time. * Tailored for You: Whether you're preparing for a horse event or planning your daily routines, Reverse Time accommodates all your scheduling needs. Create lists with event timings or craft your ideal day around the house effortlessly. * Efficiency at Your Fingertips: Never miss a beat with our app's intuitive interface. Effortlessly prioritise tasks, set start times, and ensure a seamless flow of activities. Benefits: * Empower Your Time: Take charge of your day like never before. Reverse Time ensures you're always ahead of the clock. * ADHD-Friendly: Designed with ADHD in mind, our app is a game-changer for individuals seeking structure and simplicity. * Hassle-Free Planning: No more tedious calculations or missed deadlines. Reverse Time streamlines your planning process. Premium Features: Unlock the full potential of Reverse Time with our upcoming premium features, including: * Priority Support: Enjoy priority support from our dedicated team. * Real-Time Lists: Once created, start a list to keep track of your progress. * Time-Sensitive Notifications: Get pinged when it's time to move on. Get Started Today: Download Reverse Time now and revolutionise the way you manage your time. Start planning with precision, and never let time control you again!

About

Hjarni Notes

This app acts as a persistent memory for AI assistants, allowing you to write notes once and have them accessible across different AI models. It organizes information in plain Markdown, supports team collaboration, and lets you control AI instructions.

Highlights
  • Persistent AI memory
  • Markdown knowledge base
  • Team collaboration
  • Customizable AI instructions
  • Plain text notes
  • Versioned note history
Features
Read full description

Your AI starts from zero every conversation. Hjarni fixes that. Write a note on your phone. Ask Claude or ChatGPT about it on your laptop, and it already knows. Hjarni is a Markdown knowledge base with a built-in MCP server. Notes, folders, tags. That is the whole product. MCP is not a plugin bolted on afterwards. The app was built around it. HOW IT WORKS Save a note once. Connect Claude, ChatGPT, or any MCP client. Your AI reads your notes, follows your instructions, and writes new notes that fit your system. Stop re-explaining your stack, your customers, or your style guide at the start of every conversation. Write once. You both remember. ON YOUR IPHONE Capture a note in seconds from the New tab. Triage it later from the Inbox. Search everything you have written. Read anywhere. This is the capture and read-anywhere companion. The long editing sessions happen on the web. That is on purpose. ONE BRAIN, EVERY ASSISTANT Claude and ChatGPT each keep their own memory, and neither one shares. Hjarni sits outside both. Switch assistants, keep your context. Works with Claude, ChatGPT, Claude Code, Cursor, and anything else that speaks MCP. MEMORY YOU CAN ACTUALLY READ Assistant memory is a black box. Hjarni is not. Every note is plain Markdown you can open, search, and edit. Every change is versioned, so you can see what your AI wrote, diff it, and revert it. Export everything, any time, in a format that opens anywhere. SHARE A BRAIN WITH YOUR TEAM Team folders give everyone the same context. Your conventions, your decisions, your onboarding docs. Every teammate's AI reads the same thing, so nobody has to be the person who remembers. YOU OWN THE INSTRUCTIONS Set instructions per folder and per team. Tell your AI how to format notes, which tags to use, what tone to write in. Your AI works the way you work. SIMPLE ON PURPOSE We left features out on purpose. No databases. No kanban boards. No page builders. Hjarni is a place to write and organize. The constraint is the feature. WHO IT IS FOR Developers, teams, founders, researchers, writers, travelers. Anyone who has typed the same context into a chat window twice. HJARNI PRO Hjarni is free to use, with a limit on how many notes you can keep. Pro removes the limit and adds file attachments, imports, email capture, and folder collaborators. Pro is an auto renewing subscription, monthly or annual. Payment is charged to your Apple Account at confirmation of purchase. It renews unless you turn off auto renew at least 24 hours before the end of the current period, and your account is charged for the renewal within 24 hours before that. Manage the subscription and turn off auto renew in your Apple Account settings. Terms of Use (EULA): https://hjarni.com/terms Privacy Policy: https://hjarni.com/privacy

Screenshots

Reverse Time4 screens
Hjarni Notes4 screens

Verdict

The call

The clearest difference is rating: Hjarni Notes at 5.0 against Reverse Time's 3.7. Hjarni Notes also leads on update cadence (weekly vs every 7 months). Reverse Time's advantage is monetization model (free vs freemium) and ratings volume (3 vs 1). On price, ads, 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Hjarni Notes holds the better App Store score, 5.0 against 3.7. Both are backed by a comparable volume of ratings — 3 and 1 respectively.

UpkeepUpdate frequency

Reverse Time ships an update every 7 months, Hjarni Notes weekly. The most recent releases landed on July 20, 2026 and September 30, 2026 respectively.

Scorecard4 real differences · 6 level
Reverse Time versus Hjarni Notes: the parameters behind the verdict, then further details
ParameterReverse TimeHjarni Notes
PriceFreeFree
Rating3.7 (3 ratings)5.0 (1 ratings) — better
Positive reviews66.7% of reviews—
Number of ratings3 — better1
Update frequencyEvery 7 monthsWeekly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterFreemium
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.216.0 — better
Further details — not scored
Size1 MB4 MB
Age rating4+4+
DeveloperTiny Solutions Group Ltdevert van den bruel

Customer experience

Reverse Time

All ratings3 ratings
Positive66.7%
Neutral0.0%
Negative33.3%
Written reviews3 reviews
Positive66.7%
Neutral0.0%
Negative33.3%

Hjarni Notes

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

In-app purchases

None

Reverse Time

No in-app purchases

None

Hjarni Notes

No in-app purchases

Questions

Is Reverse Time free?
Reverse Time is free to download, with no in-app purchases.
Is Hjarni Notes free?
Hjarni Notes is free to download, with no in-app purchases.
Which has better reviews, Reverse Time or Hjarni Notes?
Hjarni Notes is rated higher. Reverse Time averages 3.7 out of 5 from 3 ratings, while Hjarni Notes averages 5.0 from 1 ratings.
Do Reverse Time or Hjarni Notes have ads?
Neither Reverse Time nor Hjarni Notes shows ads.
Which is updated more often, Reverse Time or Hjarni Notes?
Reverse Time ships an update every 7 months, and Hjarni Notes weekly. Most recently, Reverse Time was updated on July 20, 2026 and Hjarni Notes on September 30, 2026.

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