Comparison

FlySpaceA vs TDY Slayer

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

Head to head
About

FlySpaceA

Access Space Available flight data and eligibility information. View flights on an interactive map, filter by status and dates, and find terminal details. Calculate your travel category and draft request emails.

Highlights
  • Interactive flight map
  • Flight list with filters
  • Terminal information browser
  • Eligibility category calculator
  • Draft travel request emails
  • Push notifications for new flights
Read full description

FlySpaceA puts Space Available flight data from Air Mobility Command in your pocket. No more refreshing terminal Facebook pages for 72-hour schedules. Open the app, check what's flying, and go. FLIGHT MAP: All tracked flights show up on an interactive map with clustered markers and route arcs. Tap any airport marker to see its departures. You can zoom, scroll, and quickly see what's moving across the Air Mobility Command network. FLIGHT LIST AND FILTERS: Switch to the list view for a detailed look. Filter by flight status (Firm, Tentative, Cancelled), specific airports, or date range. Handy when you're watching a particular route or waiting on a specific terminal. TERMINAL BROWSER: Look up Air Mobility Command terminal details so you know where to sign up and what to expect before you get there. ELIGIBILITY CALCULATOR: Not sure which Space Available category you fall under? The built-in calculator asks a few questions and tells you your Air Mobility Command travel category. It covers all six: Cat I: Emergency Leave (Unfunded) Cat II: Environmental and Morale Leave (Accompanied) Cat III: Ordinary Leave, House Hunting, Medal of Honor Cat IV: Unaccompanied EML Cat V: Other Permissive TDY, Unaccompanied Dependents, Post-Deployment/Mobilization Respite Absence Cat VI: Retirees, Gray Area Retirees, Guard/Reserve (Inactive), 100% Disabled Veterans, ROTC REQUEST EMAILS: Pick a flight and open a draft email to the terminal in one tap, ready for you to review and send from your own email app. WHO THIS IS FOR: Active duty, Guard, Reserve, retirees, dependents, 100% disabled veterans, and anyone else eligible for Space Available travel. If you've spent time hunting for flight schedules across scattered websites and social media pages, this app pulls it all into one place. Sign in with Apple or Google, or create an account with email. Flights require a free account; the terminal directory and eligibility calculator work without one. Check flights, figure out your category, and plan your trip. FlySpaceA is an independent app. It is not affiliated with, endorsed by, or operated by the U.S. Department of Defense, Air Mobility Command, or any military service

About

TDY Slayer

Effortlessly convert travel receipts into a ready-to-file DTS voucher. This app automatically reads receipt details like type, amount, and dates, organizing them for government travel. Simplify your reimbursement process by turning a complex task into a straightforward checklist.

Highlights
  • Automatic receipt reading
  • Organizes expenses by trip
  • Per diem lookup
  • Export receipts for DTS
  • Smart expense advisories
  • Voucher audit
Features
Read full description

Turn TDY receipts into organized DTS voucher prep. Scan hotel folios, airfare, and other travel receipts, review your expenses, and export your receipts for DTS. Upgrade to Pro for missing-expense advisories and a guided voucher-entry checklist. BUILT FOR MILITARY TRAVEL Made for U.S. service members and DoD civilians traveling on TDY or TAD orders. TDY Slayer helps prepare your Defense Travel System (DTS) voucher. You review the details and submit it yourself in DTS. FREE • Capture receipts with your camera, photo library, or files, or share a PDF into the app • Read receipt amounts, dates, taxes, ticket numbers, and full hotel folios automatically • Keep receipts organized by trip • View lodging and meals and incidental expenses (M&IE) rates for your itinerary • Export a receipt package for DTS • Look up per diem rates by location TDY SLAYER PRO • Review advisories that flag possible missing expenses • Organize claimable expenses into DTS expense categories • Prepare a voucher summary and follow a guided DTS entry checklist • Audit past vouchers for possible missed expenses to consider for an amendment YOUR DATA Your trips and receipt library are stored on your iPhone. Receipt scanning and voucher audits use cloud AI processing; documents are stored briefly for processing and deleted afterward. Sign in with Apple handles account access. See our Privacy Policy for details on processing, analytics, and subscriptions. TDY Slayer is an independent travel-preparation app. It does not connect to DTS or other government systems. SUBSCRIPTION TDY Slayer Pro is an auto-renewable subscription offered as a monthly or annual plan. The price is shown in the app before purchase and is charged to your Apple Account at confirmation. It renews automatically unless canceled at least 24 hours before the period ends. Manage or cancel anytime in your Apple Account settings. Terms of Use (EULA): https://tdyslayer.com/terms Privacy Policy: https://tdyslayer.com/privacy

Screenshots

FlySpaceA4 screens
TDY Slayer4 screens

Verdict

The call

The clearest difference is in-app purchases: FlySpaceA at none against TDY Slayer's 2. FlySpaceA also leads on iOS requirement (15.0 vs 18.0). TDY Slayer's advantage is update cadence (every 3 days vs every 3 months). On price, rating, review sentiment and ratings volume 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. TDY Slayer sells 2 in-app purchases, starting at $4.99 per month. FlySpaceA asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for FlySpaceA against 5.0 for TDY Slayer. Both are backed by a comparable volume of ratings — 3 and 4 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

FlySpaceA ships an update every 3 months, TDY Slayer every 3 days. The most recent releases landed on October 24, 2026 and October 10, 2026 respectively.

Scorecard4 real differences · 6 level
FlySpaceA versus TDY Slayer: the parameters behind the verdict, then further details
ParameterFlySpaceATDY Slayer
PriceFreeFree
Rating5.0 (3 ratings)5.0 (4 ratings)
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings34 — better
Update frequencyEvery 3 monthsEvery 3 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFreemium
DevicesiPhone, iPod — betteriPhone
Requires iOS15.0 — better18.0
Further details — not scored
Size24 MB59 MB
Age rating4+4+
DeveloperFlySpaceASouthwind Digital LLC

Customer experience

FlySpaceA

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

TDY Slayer

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

FlySpaceA

No in-app purchases

2 purchases

TDY Slayer

Subscriptions2
  • TDY Slayer Pro (Monthly)$4.991 Month
  • TDY Slayer Pro (Yearly)$39.991 Year

Questions

Is FlySpaceA free?
FlySpaceA is free to download, with no in-app purchases.
Is TDY Slayer free?
TDY Slayer is free to download, with in-app purchases available.
Which has better reviews, FlySpaceA or TDY Slayer?
FlySpaceA and TDY Slayer are both rated 5.0 out of 5 on the App Store, from 3 and 4 ratings respectively.
Do FlySpaceA or TDY Slayer have ads?
Neither FlySpaceA nor TDY Slayer shows ads.
Which is updated more often, FlySpaceA or TDY Slayer?
FlySpaceA ships an update every 3 months, and TDY Slayer every 3 days. Most recently, FlySpaceA was updated on October 24, 2026 and TDY Slayer on October 10, 2026.

Other comparisons