IntervalTimer vs AI Journal & Diary CAIRN PRO
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
IntervalTimer
This app provides a minimalist yet powerful interval timer for high-intensity workouts like HIIT, Tabata, and EMOM. It features professional voice guidance, customizable templates, and a clear, large display for easy readability during exercise.
- Professional voice guidance
- 20+ built-in workout templates
- Customizable interval presets
- Extra-large, readable display
- Three-color phase coding
- Workout session tracking
Read full descriptionHide full description
Every Round, Get Stronger. A minimalist yet powerful interval timer designed for HIIT, Tabata, EMOM, and all high-intensity workouts. Now featuring 20+ built-in templates and professional voice guidance. Set your intervals in seconds with our precision vertical ruler. Start training with one tap. See your countdown from across the room with our extra-large display—perfect for the gym floor or yoga mat. ◆ BUILT FOR REAL WORKOUTS • Professional Voice Guidance: Male and female voice options for Work, Rest, and Round transitions • Haptic feedback for key phase transitions • Pause, resume, and recovery from interruptions • Auto time correction when returning from background • Background audio cues (Coming Soon): Will work seamlessly with your music ◆ READY-TO-USE TEMPLATES • 20+ Professional Templates built-in • Tabata Classic (20s work / 10s rest × 8) • EMOM 10 (Every Minute on the Minute) • Sprint Starter (Quick high-intensity intervals) • Create and save your own custom presets ◆ PRECISION INTERVAL EDITING • Vertical ruler with 1-second precision • Smart haptic feedback on every tick • Floating value display—your finger never blocks the numbers • Adjust Work, Rest, Intervals, and Rounds with intuitive controls ◆ CRYSTAL-CLEAR COUNTDOWN • Extra-large timer digits readable from 10+ feet away • Landscape mode for maximum visibility • Three-color phase coding: Orange (Work) / Blue (Rest) / Purple (Round Rest) • Always-on display keeps the screen active during workouts ◆ COMPLETE WORKOUT TRACKING • Session summary: total time, work time, rest time, completion rate • Local workout history • Review and repeat past sessions ◆ DESIGNED FOR ATHLETES Perfect for HIIT, CrossFit, circuit training, running intervals, boxing rounds, swimming sets, yoga flows, stretching routines, and any activity that needs precise timing. Train smarter. Train harder. Train with Intervals Timer. emom,gym,fitness,free,custom,simple,stopwatch Privacy Policy :https://hiittimer.pages.dev/Privacy Terms of Service:https://hiittimer.pages.dev/Terms
AI Journal & Diary CAIRN PRO
Read full descriptionHide full description
CAIRN is a private journal with a warm AI companion. Write or speak about your day, reflect with a thoughtful listener, and notice the patterns you could not see on your own. Your entries are encrypted and stay on your device. Private by Design: - Entries are stored on your device and encrypted at rest. - Lock everything behind Face ID, Touch ID, or a passcode. - There is no app server. AI requests go directly from your device to Anthropic, never through us. - Your reflections are not used to train AI models by default. A Warm AI Companion: - Reflects back what you wrote and validates how you feel. - Asks one good open question instead of piling on advice. - Choose a tone that fits you: listener, stoic, socratic, coach, or friend. - Adjust warmth and length so it sounds the way you want. Mood and Emotion Tracking: - Capture how you feel with a two-axis pad for pleasantness and energy. - Name precise feelings with a curated emotion vocabulary. - Log a check-in in seconds, with or without writing. Insights and Patterns: - Weekly and monthly AI reflections that surface recurring themes. - Pattern detection, such as moods that tend to dip on certain days. - A private year-in-review of the arcs you lived through. Ask Your Journal: - Ask questions about your own past, like when you last felt proud. - Get answers drawn from your entries, retrieved on your device. Voice Journaling: - Speak instead of type, transcribed on your device. Guided Templates and Prompts: - Gratitude, CBT thought record, decision journal, dream journal, and daily reflection. - Daily prompts plus a prompt library and curated packs. Kind Habits: - Forgiving streaks that encourage you without guilt. - Calendar heatmap, on this day memories, and full-text search. - Gentle reminders you control. You Own Everything: - Export to Markdown or PDF anytime. - Encrypted backup and restore, plus a clean therapist-export PDF. - No lock-in. No ads, ever. CAIRN is a journaling companion, not therapy, medical advice, or a crisis service. It complements professional care and is not a substitute for it. Journaling is free forever. Pro unlocks the AI features with a monthly plan, an annual plan, or a one-time lifetime unlock. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is price: IntervalTimer at Free against AI Journal & Diary CAIRN PRO's $1.99. IntervalTimer also leads on update cadence (every 10 days vs every 2 months). On ads, in-app purchases, device support and iOS requirement 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
IntervalTimer is free to download; AI Journal & Diary CAIRN PRO costs $1.99 up front. IntervalTimer sells 3 in-app purchases, starting at $1.99 per month and AI Journal & Diary CAIRN PRO sells 3 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.
IntervalTimer ships an update every 10 days, AI Journal & Diary CAIRN PRO every 2 months. The most recent releases landed on October 31, 2026 and November 10, 2026 respectively.
| Parameter | IntervalTimer | AI Journal & Diary CAIRN PRO |
|---|---|---|
| Price | Free — better | $1.99 |
| Rating | 3.7 (3 ratings) — better | — |
| Positive reviews | 75.0% of reviews | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 10 days — better | Every 2 months |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | — |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.0 — better | 18.6 |
| Further details — not scored | ||
| Size | 18 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | Pinyipin Technology (Chongqing) Co., Ltd. | Aneesh Pradeep |
In-app purchases
IntervalTimer
- PRO Monthly $1.99$1.991 Month
- PRO Annual $19.99$9.991 Year
- Interval Timer Pro Lifetime$39.99
AI Journal & Diary CAIRN PRO
- Pro Monthly$4.991 Month
- Pro Annual$29.991 Year
- CAIRN Pro$69.99
Questions
Is IntervalTimer free?
Is AI Journal & Diary CAIRN PRO free?
Do IntervalTimer or AI Journal & Diary CAIRN PRO have ads?
Which is updated more often, IntervalTimer or AI Journal & Diary CAIRN PRO?
Other comparisons















