Comparison

Shellback vs NAVAIR 6.8.5 Smart Tabs

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

Head to head
About

Shellback

This app provides US Naval Surface Force personnel with offline access to essential information. It includes manuals and resources for administration, medical, operations, personnel management, safety, and navigation rules. Content is updated annually for relevance.

Highlights
  • Offline access to SURFOR information
  • Admin/Training manuals
  • Medical readiness resources
  • Operations and navigation training
  • Personnel management documents
  • Safety information and lessons learned
  • Rules of the Road quiz
Features
Read full description

What is the Shellback app? Shellback, formerly known as eDivo, is a free mobile app developed to support US Naval Surface Force (SURFOR) personnel in an easy-to-access offline environment. What is a Shellback? In naval tradition, a Shellback is a nickname for a Sailor who has crossed the Equator and thus transitioned from a novice Sailor, or Pollywog, to an experienced Sailor. Why do I need Shellback? Shellback provides Sailors the ability to download key SURFOR information on their own portable devices and access it while underway without the need for an internet connection. Shellback provides the most relevant and current information to SURFOR Sailors in one location. Content is scheduled for annual updates. What type of info can I find in Shellback? The information in Shellback is separated into several main categories: -Admin/Training: Contains the Correspondence Manual and the SURFOR Training and Readiness Manual. -Medical: Includes the Manual of the Medical Department, information on medical and physical readiness, mental health, Medical Evaluation Board procedures, the Disability Evaluation System, family member readiness, and more. -Operations: Includes information and training on bridge management, navigation basics, watch team tools, crew endurance, operating procedures for air-capable ships, Air Certification for Naval Surface Force Ships, and manuals for amphibs, maintenance, and other general ship operation resources. -Personnel Management: Provides documents on Navy personnel policy and administration. Also includes legal handbooks and manuals, resources for Surface Warfare Officers, and a variety of general personnel management resources. -Safety: Provides documents related to lessons learned, mishap reporting, notices, safety-related awards, and general safety resources. -Rules of the Road: This quiz tests a Sailor’s knowledge of maritime navigation rules.

About

NAVAIR 6.8.5 Smart Tabs

This reference app provides visual aids for Navy/Marine Aviation professionals on Product Data/Technical Data and Intellectual Property rights. It simplifies complex concepts related to management, acquisition, and marking of data, offering decisional tools and best practices.

Highlights
  • Visual aids for aviation data rights
  • Best practices for PD/TD IP
  • Decisional logic trees
  • Conformal assertion markings samples
  • References and links for practitioners
  • Supplementation to DR SAVE toolset
Features
Read full description

The SmartTabs mobile app is a Navy/Marine Aviation's "Best Practices" and "Lessons Learned" desktop reference set of visual aids constructed using the Department of Defense Acquisition Regulation Supplement (DFARS) requirements for participants dealing with Product Data/Technical Data (PD/TD) and their associated Intellectual Property (IP) (commonly known as "Data Rights"). These Best Practices graphically represent a compendium of most commonly encountered PD/TD IP related planning, acquisition, marking, reporting, and alternatives mitigation situations (so it fits most- but not all- situations). SMART TABS illustrates simplified concepts and decisional tools treating PD/TD related IP's: (i) management planning, assessment, and alternatives reporting, (ii) decisional logic trees associated with most commonly encountered IP pathways as part of creation, acquisition, usage rules and issues (including potential mitigation alternatives), (iii) conformal assertion markings samples (AKA "Stickers") using "Best Practices" treatment, and (iv) references and links for practitioners, including its supplementation to the Data & Rights Sustainment & Acquisition Validation Engine (DR SAVE) toolset.

Screenshots

Shellback3 screens
NAVAIR 6.8.5 Smart Tabs3 screens

Verdict

The call

The clearest difference is rating: NAVAIR 6.8.5 Smart Tabs at 5.0 against Shellback's 3.2. NAVAIR 6.8.5 Smart Tabs also leads on update cadence (every 4 months vs every 10 months). Shellback's advantage is ratings volume (38 vs 3). On price, ads, in-app purchases and monetization model 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

NAVAIR 6.8.5 Smart Tabs holds the better App Store score, 5.0 against 3.2. That said, the two scores are not equally well evidenced: Shellback has 38 ratings behind it against 3, so its average is the more settled of the two.

UpkeepUpdate frequency

Shellback ships an update every 10 months, NAVAIR 6.8.5 Smart Tabs every 4 months. The most recent releases landed on June 9, 2026 and August 20, 2026 respectively.

Scorecard3 real differences · 7 level
Shellback versus NAVAIR 6.8.5 Smart Tabs: the parameters behind the verdict, then further details
ParameterShellbackNAVAIR 6.8.5 Smart Tabs
PriceFreeFree
Rating3.2 (38 ratings)5.0 (3 ratings) — better
Positive reviews45.2% of reviews
Number of ratings38 — better3
Update frequencyEvery 10 monthsEvery 4 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better16.0
Further details — not scored
Size71 MB25 MB
Age rating12+4+
DeveloperProgram Executive Office for Enterprise Information Systems, Sea Warrior ProgramNaval Air Systems Command

Customer experience

Shellback

All ratings38 ratings
Positive52.6%
Neutral5.3%
Negative42.1%
Written reviews42 reviews
Positive45.2%
Neutral19.0%
Negative35.7%

NAVAIR 6.8.5 Smart Tabs

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Shellback

No in-app purchases

None

NAVAIR 6.8.5 Smart Tabs

No in-app purchases

Questions

Is Shellback free?
Shellback is free to download, with no in-app purchases.
Is NAVAIR 6.8.5 Smart Tabs free?
NAVAIR 6.8.5 Smart Tabs is free to download, with no in-app purchases.
Which has better reviews, Shellback or NAVAIR 6.8.5 Smart Tabs?
NAVAIR 6.8.5 Smart Tabs is rated higher. Shellback averages 3.2 out of 5 from 38 ratings, while NAVAIR 6.8.5 Smart Tabs averages 5.0 from 3 ratings.
Do Shellback or NAVAIR 6.8.5 Smart Tabs have ads?
Neither Shellback nor NAVAIR 6.8.5 Smart Tabs shows ads.
Which is updated more often, Shellback or NAVAIR 6.8.5 Smart Tabs?
Shellback ships an update every 10 months, and NAVAIR 6.8.5 Smart Tabs every 4 months. Most recently, Shellback was updated on June 9, 2026 and NAVAIR 6.8.5 Smart Tabs on August 20, 2026.

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