Gapper vs Rivet
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Gapper
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Gapper scans your calendar and finds every free window between your meetings — then suggests the right activity to fill it, based on how long the gap is and how you're feeling right now. WHAT GAPPER DOES: Every day is full of hidden time. The 20 minutes before your afternoon call. The gap between your morning standup and lunch. Gapper surfaces these windows automatically and turns them into opportunities. HOW IT WORKS: 1. Connect your calendar (Apple) 2. Gapper detects free gaps within your work hours 3. Browse activity suggestions matched to each gap's length and your energy level 4. Tap to schedule — it appears on your timeline instantly SMART SUGGESTIONS: Gapper considers three things when suggesting activities: · Gap length — a 5-minute gap gets a breathing exercise, not a 30-minute workout · Your energy level — low energy? We'll suggest a podcast. High energy? Let's move. · Your preferences — enable only the categories you care about ACTIVITY CATEGORIES: · Health — stretching, breathing, quick workouts, meditation · Learning — reading, flashcards, language practice, podcasts · Productivity — journaling, planning, email cleanup, quick reviews You can also add your own custom activities with your preferred duration and energy level. YOUR TIME, YOUR RULES: Set your own work hours so Gapper only looks for gaps between, say, 9 AM and 6 PM — never suggesting you fill time at midnight. WEEKLY STATS: See how much time you reclaimed each week, your current streak, and a breakdown by category. Small wins add up. PRIVACY FIRST: Everything stays on your device. No account required. No data collected. Your calendar data never leaves your phone.
Rivet
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Rivet puts your calendars, to-dos, notes, and workouts on one timeline. Plan what’s next and see what you’ve done, in one app. Smart Add Type or say what you want to add, like “lunch with Sam on Thursday at 1” or “move standup to 4”. Rivet shows the change first. Nothing changes until you tap Add. Plans Your to-dos and threads, one tap from the timeline. Group to-dos, notes, and meetings in a thread. Drag a to-do onto the timeline to give it a time. Calendars See Apple Calendar and Google Calendar events next to your to-dos, and create events from Rivet. Add a Google Meet link to an event and join from the timeline. Your Apple Reminders show too. Later Save links, text, images, and files from Safari or the share sheet. Keep things to watch, read, cook, visit, and buy. Read supported pages in Rivet, highlight passages, and add comments. Drag anything you saved onto the timeline to plan when you’ll do it. Fitness Build a workout, import routines from Hevy or Strong, or paste a workout as plain text. Add it to the timeline, then start it. Rivet takes you through each set and rest. See your rest timer on the Lock Screen and in the Dynamic Island. Finished workouts save to Apple Health. Meeting notes Record a meeting and Rivet saves the transcript to Notes. On an iPhone with Apple Intelligence, Rivet also lists the key points and decisions. Rivet records only after you start a recording. Capsules Your workouts, the music you played, and what you watched show on the timeline as Capsules. Connect Apple Health, Apple Music, and Trakt to fill them. Memory See each week, month, and year: what you watched, listened to, read, and cooked, where you went, your meetings, and how you moved and slept. Time Machine Scroll back through past days and tap one to open it on the timeline. Sky The sky and the Earth behind the timeline follow the sun. Open Sky to choose a fixed time of day instead. Search Pull down on the timeline to search to-dos, events, notes, meetings, workouts, music, and what you watched. Built into iOS • Siri: on iOS 27, ask Siri to add, move, or finish to-dos, notes, and events, or say “move this to Friday” about what’s on screen. • Shortcuts: add to Rivet, Notes, or Plans, save a link, mark a to-do done, focus on a to-do, start a workout, or mark an episode watched. • Apple Intelligence: Smart Add, meeting notes, and Later use the on-device model on your iPhone. • Live Activities and the Dynamic Island: follow meetings, events, and rest timers. • Widgets: today, what’s next, the week, and the month on the Home Screen and Lock Screen. • Control Center: a Rivet control to search or add. • Spotlight: find your to-dos, notes, and events. • Share sheet and Safari: save links, text, images, and files to Later. • Apple Health, Apple Music, Apple Calendar, and Apple Reminders. • iCloud sync between iPhone and Mac, Sign in with Apple, and Family Sharing. Privacy Smart Add works on your iPhone. You can let it send a hard sentence to Claude or Gemini for a better result. That’s off unless you turn it on. Fitness asks before it sends a question to Claude. Health data stays on your iPhone. Your timeline syncs through your iCloud account. Try it free, then pay for it once Use all of Rivet free for 14 days. Then pay once to keep everything running. No subscription. Family Sharing includes your family. After the trial, you can still read everything you added. Reminders stop, and Health, Music, and Trakt stop updating. Your local price shows before you buy. If you bought a plan before, it keeps working. Terms: https://rivetcal.app/terms Privacy: https://rivetcal.app/privacy Icons by Icons8: https://icons8.com
Screenshots
Verdict
The clearest difference is ads: Rivet at none against Gapper's shown. Gapper's advantage is iOS requirement (18.2 vs 26.0). 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
Both are free to download. Gapper sells 1 one-off in-app purchase and Rivet sells 3 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.
Gapper ships an update every 5 days, Rivet every 3 days. The most recent releases landed on October 5, 2026 and October 25, 2026 respectively.
| Parameter | Gapper | Rivet |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 5 days | Every 3 days — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad | iPhone, iPad, Mac — better |
| Requires iOS | 18.2 — better | 26.0 |
| Further details — not scored | ||
| Size | 10 MB | 126 MB |
| Age rating | 4+ | 4+ |
| Developer | CHING-HAO FAN | James Whelan |
In-app purchases
Gapper
- Gapper Pro Unlock$0.99
Rivet
- Rivet Pro - Monthly$4.991 Month
- Rivet Pro - Annual$44.991 Year
- Rivet Pro - Lifetime$149.99








