ErgIntz vs IKSU
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ErgIntz
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ErgIntz turns a Concept2 erg into a proper interval machine. Build a workout on your phone, send it to the PM5 over Bluetooth, and row it with live targets, countdowns, and spoken cues — no button-pressing on the monitor mid-piece. BUILD REAL WORKOUTS • Distance, time, and calorie intervals, with fixed or open-ended rest • Repeats and variable structures — 6×500m with 1:00 rest, pyramids, tabatas • Targets as a pace, as watts, or as a percentage of your 5 km power • Import a workout straight from a screenshot ROW WITH THE NUMBERS THAT MATTER • Live pace, power, stroke rate, and heart rate from the PM5 and your heart-rate monitor • Work and rest countdowns, with audio cues so the phone can stay on the floor • Pace or watts everywhere — your choice, applied across the whole app • Every colour graded against your 5 km best, so intensity reads at a glance KEEP EVERY SESSION • Full history with splits, laps, and per-interval averages • Personal bests per workout • A share card for the sessions worth showing CONNECTED, IF YOU WANT • An account is just an email address — no password, and the app works without one • Connect your Concept2 Logbook and every session lands there automatically — and Concept2 forwards it on to Garmin Connect and Strava • Join a club to row shared workouts and see who turned up on the boards ErgIntz works with the Concept2 Performance Monitor 5 (PM5) on RowErg, SkiErg, and BikeErg, connecting over Bluetooth. Bluetooth heart-rate monitors are supported.
IKSU
Book fitness classes, courts, treatments, and courses. Manage your bookings, add them to your calendar, and renew memberships. Use mobile check-in for easy access to facilities.
- Book and cancel classes
- Book and cancel courts/services
- Manage memberships
- Mobile check-in
- Add bookings to calendar
- Filter favorite classes
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Välkommen till vår app! Här kan du boka pass, bana (beroende på access), behandlingar och kurser. Hålla koll på bokningar och få dem automatiskt i din kalender. Logga in med dina IKSU‑uppgifter eller skapa ett konto direkt i appen. I appen kan du: Boka, avboka, ställa dig i kö och se dina bokade pass Boka, avboka och se dina bokade banor/tjänster Använda filter för att lättare se dina favoritpass Förnya medlemskap och administrera ditt abonnemang Använda mobil inpassering för enkel access till våra anläggningar
Screenshots
Verdict
The clearest difference is update cadence: ErgIntz at every 3 days against IKSU's fortnightly. IKSU's advantage is iOS requirement (15.5 vs 17.0). 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
ErgIntz ships an update every 3 days, IKSU fortnightly. The most recent releases landed on October 19, 2026 and October 11, 2026 respectively.
| Parameter | ErgIntz | IKSU |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 3 days — better | Fortnightly |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.0 | 15.5 — better |
| Further details — not scored | ||
| Size | 15 MB | 251 MB |
| Age rating | 12+ | 4+ |
| Developer | Nils Martin Gunnar Johansson Ahlberger | IKSU Halsa AB |
In-app purchases
ErgIntz
No in-app purchases
IKSU
No in-app purchases









