Ultradian vs Restspace
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Ultradian
Leverage your natural energy cycles for optimal task management and rest. This app analyzes biometric data to predict your ultradian rhythms, helping you schedule demanding activities during peak energy and breaks when needed.
- Analyze biometric data
- Predict ultradian rhythms
- Schedule peak task times
- Schedule rest breaks
- Connects to Apple Health
Read full descriptionHide full description
Experience peak productivity and well-timed rest with Ultradian, the app designed to help you leverage your natural energy cycle. By securely connecting to Apple Health, Ultradian analyzes your biometric data to predict your daily ultradian rhythms—empowering you to plan tougher tasks when you’re at your peak and schedule breaks when you need them most.
Restspace
Read full descriptionHide full description
Forty percent of urban physical capacity sits idle at any moment — garages with empty bays, offices dark after 6 PM, driveways with no car in them. Restspace turns that dead inventory into live infrastructure you can request on demand. Tell us what you need: "I need a quiet place to nap between flights." "I need a car for a weekend road trip." "I need a desk with fast Wi-Fi for three hours." "I need somewhere to stash boxes while I move apartments." Our AI interprets your intent and allocates capacity across eight spatial utilities: REST — Nap pods, private rooms, daybeds WORK — Desks, offices, conference rooms VEHICLES — Cars, trucks, vans — rent by the hour or day STORAGE — Lockers, garages, climate-controlled units FITNESS — Gyms, courts, pools, studios MEETING — Board rooms, event spaces, presentation setups HYGIENE — Showers, changing rooms, restrooms SOCIAL — Lounges, patios, rooftops, kitchens One space can serve multiple utilities in a single day. A downtown loft is a coworking desk at 10 AM, a nap room at 2 PM, and an event space at 7 PM. Restspace scores every option on utility fit, proximity, availability, price, and quality — then ranks the best match for you. How it works: 1. Describe what you need in plain language 2. AI allocates matching capacity nearby 3. Book instantly — hourly, daily, or weekly 4. Check in and use the space For operators: List your idle assets — parking spots, spare rooms, vehicles, studios — and let demand find them. Set your own rates, availability windows, and access methods. Restspace is programmable physical infrastructure. One platform, eight utilities, capacity when you need it.
Screenshots
Verdict
Ultradian and Restspace are too close to call on the numbers: across 3 compared parameters — price, in-app purchases and iOS requirement among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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.
| Parameter | Ultradian | Restspace |
|---|---|---|
| Price | Free | Free |
| Rating | 3.3 (4 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 4 — better | — |
| Update frequency | Every 5 months | — |
| Ads | No | — |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone — better | — |
| Requires iOS | 17.5 — better | 17.6 |
| Further details — not scored | ||
| Size | 7 MB | 30 MB |
| Age rating | 4+ | 17+ |
| Developer | Katherine Gratale | Restspace, Inc. |
In-app purchases
Ultradian
No in-app purchases
Restspace
No in-app purchases









