EVVA AirKey vs SpawnLog
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
EVVA AirKey
This app transforms your smartphone into a digital key, allowing you to securely send and manage access to properties and company doors. It offers features like geo-tagging for navigation and multi-administration for managing multiple sites and users.
- Smartphone as a key
- Secure key sharing
- Online access management
- Geo-tagging for navigation
- Multi-site administration
- Office mode automation
- REST API integration
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Do you have a holiday apartment and handing over the keys constantly annoys you? Do you no longer have an overview in your company of how many keys are in circulation? Do you feel unsafe because of lost keys? Then it's time for AirKey. With AirKey the smartphone is the key. You can safely send new keys to other smartphones and manage your access control system online. But what do you need? An AirKey locking component, a smartphone and an internet connection. And if you don't want to use a smartphone, there are alternative access media too, such as cards or key tags. Uncompromising security! The communication between smartphone and locking component is end-to-end encrypted, making it completely secure against interception. The app is secured with an additional PIN. The key tags also have state-of-the-art technology and they cannot be copied. Other features Send a key: Never hand over a key again. It's very easy to send keys to people, such as employees, freelancers or guests. You can also pre-programme this for particular times. https://youtu.be/2lJOMMhiyRY Geo-tagging: Get there quick. The smartphone knows where the locking components are and shows the way in the navigation app. Component sharing: Easily hand locking components over to other AirKey users, for example, in a shared office, for them to manage themselves and reduce expenses for key management. Multi-administration: Separately, quickly and simply manage multi-site companies with several administrators and always know who has been granted which authorisation. Office Mode: Full or semi-automatic office mode on certain doors. Automatically takes into account public holidays as well as summer and winter time. Other practical features for businesses: Import personal data with the click of a button and export system data, assign maintenance authorisations to smartphones, REST API to control certain AirKey functions via your own software. AirKey meets the EU General Data Protection Regulations: Together with a data protection expert, AirKey was developed into the access control system with the best data protection in order to manage our customers' data in accordance with the law. The administrator can also turn off event logging of personal data in the online administration. For a list of all tested, compatible smartphones visit: https://www.evva.com/de/airkey/compatible-smartphones/
SpawnLog
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The mushroom grow tracker built to replace your spreadsheet — and fix everything wrong with the other apps. Every flush logged. Every harvest weighed. BE% calculated automatically. No locked logs, no subscription, no cloud required. 【What You Can Do】 ▷ Batch Tracking Log every batch from inoculation day: species, strain, substrate type and weight, inoculation date, notes, and photos. The batch card shows total harvest, flush count, days running, and current BE% at a glance. Free up to 5 active batches. ▷ Flush Log & BE% — Always Free Record flush number, harvest date, wet weight, and dry weight. SpawnLog calculates BE% (biological efficiency = wet weight ÷ dry substrate weight × 100) automatically — the metric every serious grower tracks. Every log is fully editable and deletable. No locked entries, ever. ▷ Contamination Log Record contamination type (green mold / wet rot / bacterial blotch / cobweb mold), stage (grain or bulk), date, discard status, and photos. Stay on top of what's failing and why. ▷ Harvest Share Cards — Free (with watermark) Tap share on any flush. A stats card is generated instantly: strain name, flush number, wet weight, dry weight, BE%, days since inoculation, and your harvest photo. Share it to Reddit, Discord, or Instagram. This is the card that makes other growers ask "what app is that?" SpawnLog Pro removes the watermark. ▷ Substrate Calculator — Always Free Two calculators built in: (1) Water Calculator — enter dry substrate weight and target moisture %, get exact water to add. (2) Spawn Rate Calculator — enter substrate weight and spawn rate %, get spawn weight. No more running Shroomery spreadsheets. ▷ Stats Charts (Pro) Bar charts for total harvest by batch, BE% by batch, and flush-by-flush yield trends. Contamination rate breakdown. See which strains and methods consistently win. ▷ Recipe Library (Pro) Save your substrate mixes with ingredient list and spawn rate. Link recipes to batches. Never forget what you used in that record-breaking run. ▷ Export & Import — Always Free Export batch and flush data as CSV, or as a ZIP that includes photos, notes, contamination logs, and recipes. Import a CSV or ZIP anytime from Settings → Data to add records back. Compatible with Sheets, Excel, and Obsidian. 【Who It's For】 · Home growers managing multiple batches who've outgrown paper and spreadsheets · Anyone who's ever asked "what was my BE% on that oyster run last month?" · Growers who post harvest results on r/MushroomGrowers, r/unclebens, or Shroomery · Growers who want their logs on their phone, not in some startup's cloud 【Your Data Stays on Your Device】 Everything is stored locally on your iPhone using SQLite. Nothing is sent to external servers. No account required. No subscription. No risk of losing your grow history if a service shuts down. 【Pricing】 · Free: 5 active batches, flush logs, contamination logs, BE% calculation, substrate calculator, CSV/ZIP export & import, and share cards (with SpawnLog watermark). · SpawnLog Pro (one-time $6.99): Unlimited active batches + stats charts + recipe library + watermark-free share cards. Pay once, yours forever. ---------------------- Developer: Kore Apps Contact: support@kore-apps.com ----------------------
Screenshots
Verdict
The clearest difference is in-app purchases: EVVA AirKey at none against SpawnLog's 1. EVVA AirKey also leads on iOS requirement (14.0 vs 16.0). SpawnLog's advantage is update cadence (every 9 days vs every 4 months). On price, ads 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. SpawnLog sells 1 one-off in-app purchase. EVVA AirKey asks for nothing beyond the download.
EVVA AirKey ships an update every 4 months, SpawnLog every 9 days. Both last shipped on October 1, 2026.
| Parameter | EVVA AirKey | SpawnLog |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (6 ratings) — better | — |
| Positive reviews | 36.0% of reviews | — |
| Number of ratings | 6 — better | — |
| Update frequency | Every 4 months | Every 9 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 14.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 13 MB | 39 MB |
| Age rating | 4+ | 4+ |
| Developer | EVVA Sicherheitstechnologie GmbH | kazuki korenori |
In-app purchases
EVVA AirKey
No in-app purchases
SpawnLog
- SpawnLog Pro$6.99









