Comparison

Leon vs PDHIQ

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Leon

This application provides aviation crew members with mobile access to crew information managed by air operators. It supports aircraft operations with features for scheduling, rostering, dispatch, and flight watch, all accessible through a central online database.

Highlights
  • Mobile crew information access
  • Aircraft operations support
  • Scheduling and rostering
  • Airplane dispatch
  • Online flight watch
  • Centralized database access
Features
Read full description

LEON is an application designed for crew members. It offers a mobile access to crew information entered by air operators into Leon system. Leon is a software for aviation supporting aircraft operations fearuring many various functions that allow to run different procedures smoothly. It includes aiding in scheduling, aircraft and crew rostering, airplane dispatch, on-line flight watch, aircraft charter sales and many more. it consists of central database accessible through Internet in relation to users' privileges. The new version of the LEON app has a new design and displays office duties that were missing in the previous version.

About

PDHIQ

Features
Read full description

PDHIQ — PDH Tracker for Licensed Professional Engineers Managing PE renewals across multiple states is a compliance nightmare. Texas wants 15 PDH by March. New York requires 18 live hours. Florida only accepts pre-approved providers. PDHIQ solves this — requirements for all 50 states are pre-loaded so you always know exactly what you need and when. TRACK EVERY STATE. NEVER MISS A DEADLINE. PDHIQ is the only mobile app built for Professional Engineers licensed in multiple states. Log courses, track hours per category, and receive reminders before every renewal deadline. WHAT PDHIQ DOES • Tracks PDH hours against your exact state requirements • Pre-loaded rules for all 50 states: total hours, ethics minimums, live instruction requirements, carryover limits, pre-approval restrictions • Deadline reminders at 90, 60, 30, 14, 7, 3, and 1 day before renewal • Exports audit-ready PDF reports for any state board (Pro) • Supports unlimited state licenses (Pro) • All data stored on-device — no account required, no cloud INSTANT SETUP FOR ANY STATE Select your state, enter your license number and expiration date. PDHIQ immediately shows your compliance status, hours needed per category, and days until your deadline. No manual configuration. CE-required states include: TX, NY, FL, IL, PA, OH, GA, NC, VA, MI, and 32 more. No CE required: CA, CO, AZ, WA, and 4 more — PDHIQ still tracks your renewal dates. PRO FEATURES • Unlimited state licenses — track every state you hold a PE license in • Audit-ready PDF reports — one tap generates a board-ready report with all courses, hours, and categories • Multi-state deadline dashboard YOUR DATA STAYS ON YOUR DEVICE No account. No cloud. All PDH records, certificate photos, and license details are stored locally on your iPhone. Export a full CSV backup anytime from Settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Leon4 screens
PDHIQ4 screens

Verdict

The call

The clearest difference is in-app purchases: Leon at none against PDHIQ's 1. On price, update cadence, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. PDHIQ sells 1 in-app purchase, starting at $39.99 per year. Leon asks for nothing beyond the download.

UpkeepUpdate frequency

Leon ships an update fortnightly, PDHIQ every 2 weeks. The most recent releases landed on October 3, 2026 and September 30, 2026 respectively.

Scorecard1 real difference · 9 level
Leon versus PDHIQ: the parameters behind the verdict, then further details
ParameterLeonPDHIQ
PriceFreeFree
Rating4.3 (8 ratings) — better—
Positive reviews9.1% of reviews—
Number of ratings8 — better—
Update frequencyFortnightlyEvery 2 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.015.1 — better
Further details — not scored
Size36 MB25 MB
Age rating4+4+
DeveloperLeon SoftwareAngela Freeman

In-app purchases

None

Leon

No in-app purchases

1 purchases

PDHIQ

Subscriptions1
  • PDHIQ Pro14 Days trial$39.991 Year

Questions

Is Leon free?
Leon is free to download, with no in-app purchases.
Is PDHIQ free?
PDHIQ is free to download, with in-app purchases available.
Do Leon or PDHIQ have ads?
Neither Leon nor PDHIQ shows ads.
Which is updated more often, Leon or PDHIQ?
Leon ships an update fortnightly, and PDHIQ every 2 weeks. Most recently, Leon was updated on October 3, 2026 and PDHIQ on September 30, 2026.

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