Diveplanner Tec & Rec vs BlendJunk
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Diveplanner Tec & Rec
Plan complex recreational and technical dives with advanced decompression models and multi-gas support. Log your dives, manage gas blends, and restore underwater photo colors. Syncs across Apple devices.
- Bühlmann ZH-L16C and Thalmann decompression models
- Open circuit and CCR dive planning
- Multi-gas decompression support
- Contingency plan computation
- Gas blending and cylinder management
- Underwater photo color correction
- Bluetooth dive computer data import
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Diveplanner Tec & Rec plans recreational and technical dives, on open circuit or closed circuit rebreather (CCR), in a few taps, and keeps your logbook. PLAN • Bühlmann ZH-L16C decompression model with your gradient factors, or the Thalmann algorithm of the U.S. Navy: VVal-79 for air and nitrox, XVal-He-9 for heliox CCR dives; compare a plan with both • Open circuit and CCR, down to 300 m / 985 ft, in salt, fresh or EN 13319 water, at sea level or at altitude • Multi-level dives, multi-gas decompression with automatic or chosen switch depths • Contingency plans computed for you: deeper, longer, lost deco gas, GF 100 and the CCR bailout • Warnings for ppO2, END, gas density, isobaric counter diffusion, CNS and OTU • The decompression chart of each plan: the profile, the tissues' ceilings at GF 100 and at your gradient factors, the leading tissue • A dive day of as many repetitive dives as you need, with their surface intervals • Saved plans in folders, shared as files GAS • Describe your cylinders: the plan gives the pressure at the end of the dive, the turn pressure, the rock bottom and the maximum bottom time your gas allows • Gas needed by volume and weight, per gas TABLES • Dive tables by depth and bottom time for your own gases, gradient factors and conditions, with the previous dives of the day • Share or print the table as a PDF TOOLS • Gas blender: partial pressure blending of nitrox, trimix and heliox from what is left in the cylinder, ideal or real gas; the best mix for a depth from your ppO2, END and gas density limits, and the cylinder label • Tides: the tide of a day anywhere at sea, from the nearest NOAA tide station or the EOT20 global tide model, its high and low waters, and the tidal currents and slack waters of a nearby current station, read to the minute on the chart • Photo colors: restore the true colors of your underwater photos and videos, their blue or green cast, haze and missing red corrected, with the depth of your logged dive; compare before and after, then save or share LOGBOOK • Log your dives by hand, from a plan, or download them over Bluetooth from a Shearwater dive computer (Petrel 2, Perdix, Perdix AI, Nerd 2, Teric, Peregrine), with the profile, stops, gases and sensor values • Photos, dive sites on a map, statistics, tags, search and filters • Synchronised between your iPhone, iPad and Mac with iCloud • Export to UDDF, Subsurface, CSV, a PDF logbook and .divelog archives; import UDDF and Subsurface SHARE • Ready-to-cut dive schedules as a PDF, for your buddy or your slate: every plan, the gas and cylinders, CNS, OTU and warnings EVERYWHERE • iPhone, iPad and Mac • Metric or imperial units • In 12 languages, each with its user guide LICENCES • Rec, free: one gas, air or nitrox up to 40 %, down to 66 m / 210 ft • Tec Basic: up to 3 gases, nitrox up to 100 %, normoxic trimix and triox • Tec Advanced: unlimited gases and depth, hypoxic trimix • Try every feature free for 2 weeks Diveplanner is a planning aid. It does not replace training, experience, a dive computer or your own judgement: always dive within the limits of your certification.
BlendJunk
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BlendJunk is the gas blending app for technical divers and fill stations. Connect your oxygen analyzer wirelessly via Bluetooth and let the app do the rest. ANALYZE Connect your OxyJunk, Divesoft or DNA analyzer via BLE. The app instantly shows your O₂ and He values and automatically calculates the MOD based on your ppO₂ limit. BLEND Enter your start and target pressure, choose your target mix and BlendJunk calculates exactly how much of each gas to add. Including fill order and top-up gas selection. PRINT Print a professional cylinder label with all gas data directly to your Brother label printer. Scan a cylinder with NFC or QR and the cylinder ID appears automatically on your label. WIRELESS Connect your wireless pressure sensor (WLB-PT) to automatically read cylinder pressure. No more manual input needed. FLEXIBLE No analyzer at hand? Enter your values manually and use BlendJunk as a standalone blend calculator. Features: • Bluetooth connection with OxyJunk, Divesoft and DNA analyzers • Trimix, Nitrox and Heliox support • Automatic MOD calculation • Gas blend calculator with fill steps • NFC and QR cylinder identification • Direct label printing via Brother QL-1110NWB - QL710W • WLB-PT wireless pressure sensor support • Works offline, no account needed Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is price: Diveplanner Tec & Rec at Free against BlendJunk's $3.99. BlendJunk's advantage is update cadence (every 2 weeks 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
Diveplanner Tec & Rec is free to download; BlendJunk costs $3.99 up front. Diveplanner Tec & Rec sells 3 one-off in-app purchases and BlendJunk sells 2 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.
Diveplanner Tec & Rec ships an update every 2 months, BlendJunk every 2 weeks. The most recent releases landed on November 3, 2026 and November 9, 2026 respectively.
| Parameter | Diveplanner Tec & Rec | BlendJunk |
|---|---|---|
| Price | Free — better | $3.99 |
| Rating | 3.1 (7 ratings) — better | — |
| Positive reviews | 42.9% of reviews | — |
| Number of ratings | 7 — better | — |
| Update frequency | Every 2 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | — |
| Devices | iPhone, iPad, Mac — better | iPhone, iPad |
| Requires iOS | 17.0 | 16.1 — better |
| Further details — not scored | ||
| Size | 96 MB | 39 MB |
| Age rating | 4+ | 17+ |
| Developer | Sensetrails LLC | Rogier Visser |
In-app purchases
Diveplanner Tec & Rec
- Two weeks free trialFree
- Tec Basic$7.99
- Tec Advanced$19.99
BlendJunk
- pro monthly$3.991 Month
- BlendJunk Pro$44.991 Year
Questions
Is Diveplanner Tec & Rec free?
Is BlendJunk free?
Do Diveplanner Tec & Rec or BlendJunk have ads?
Which is updated more often, Diveplanner Tec & Rec or BlendJunk?
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